{"title":"Physics \u0026 Motion – Pendulums, Gyroscopes and Stirling Engines","description":"\u003cp\u003eThe \u003cstrong\u003ePhysics \u0026amp; Motion\u003c\/strong\u003e collection from the Lab gathers objects that make the great laws of physics visible. The \u003cstrong\u003eNewton's cradle\u003c\/strong\u003e illustrates the conservation of energy, the \u003cstrong\u003esand pendulum\u003c\/strong\u003e traces patterns in the sand, the \u003cstrong\u003egyroscope\u003c\/strong\u003e defies gravity, and the \u003cstrong\u003eStirling engine\u003c\/strong\u003e transforms a simple temperature difference into motion.\u003c\/p\u003e\u003cp\u003eThese objects look great on a desk, a shelf, or a bookcase. They catch the eye, spark conversation, and make excellent gifts for the curious, engineers, and science enthusiasts.\u003c\/p\u003e\u003ch2\u003eWhat you will find here\u003c\/h2\u003e\u003cul\u003e\n\n\u003cli\u003eNewton's cradles and sand pendulums\u003c\/li\u003e\n\n\u003cli\u003eGyroscopes and precision spinning tops\u003c\/li\u003e\n\n\u003cli\u003eStirling engines, assembled or in build-your-own kits\u003c\/li\u003e\n\n\u003cli\u003eTensegrity sculptures that appear to float\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003cp\u003eExplore the other worlds of the \u003ca href=\"\/collections\/objets-scientifiques\"\u003eLab\u003c\/a\u003e.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFAQ – Frequently Asked Questions\u003c\/h2\u003e\u003cdetails\u003e\u003csummary\u003eHow does a Stirling engine work?\u003c\/summary\u003e\u003cp\u003eIt exploits a temperature difference between its base and its top: the heated air expands, the cooled air contracts, and this cycle turns the flywheel. Placed on a hot cup, it starts by itself.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the Newton's cradle stop?\u003c\/summary\u003e\u003cp\u003eYes, after a few dozen seconds, because friction and sound gradually dissipate the energy. You just need to relaunch a ball.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre these objects suitable for children?\u003c\/summary\u003e\u003cp\u003eThese are decorative and demonstration objects for adults and teenagers. Models with small parts or balls should be kept out of the reach of young children.\u003c\/p\u003e\u003c\/details\u003e","products":[{"product_id":"pendule-de-newton","title":"Newton's Pendulum - Mirror","description":"\u003cmeta charset=\"UTF-8\"\u003e\u003cstyle\u003e\n.fp-body{font-family:sans-serif;color:#1a1a1a;line-height:1.7;font-size:15px;max-width:760px}\n.fp-body p{margin:0 0 1rem}.fp-body a{color:#185FA5;text-decoration:none}\n.fp-intro{font-size:15px;color:#333;margin-bottom:1.25rem;line-height:1.7}\n.fp-benefits{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:1.25rem 0}\n.fp-benefit{background:#f7f7f5;border-radius:8px;padding:.75rem 1rem;display:flex;align-items:flex-start;gap:10px}\n.fp-benefit .fb-icon{font-size:18px;flex-shrink:0}.fp-benefit .fb-text{font-size:13px;line-height:1.5}\n.fp-benefit .fb-title{font-weight:500;margin-bottom:2px}.fp-benefit .fb-desc{color:#666}\n.fp-design{background:#1a1a1a;border-radius:12px;padding:1.25rem 1.5rem;margin:1.25rem 0;display:flex;align-items:flex-start;gap:14px}\n.fp-design .fd-icon{font-size:28px;flex-shrink:0}.fp-design .fd-text{color:#fff;font-size:13px;line-height:1.6}\n.fp-design .fd-title{font-weight:600;font-size:14px;margin-bottom:5px;color:#FAC775}\n.fp-tip{background:#E1F5EE;border-left:4px solid #1D9E75;border-radius:0 8px 8px 0;padding:1rem 1.25rem;margin:1.25rem 0}\n.fp-tip p{margin:0;color:#04342C;font-size:13px}.fp-tip strong{color:#085041}\n.fp-inclus{background:#fffdf7;border:2px solid #FAC775;border-radius:12px;padding:1.25rem 1.5rem;margin:1.25rem 0}\n.fp-inclus h4{margin:0 0 .75rem;font-size:14px;font-weight:500;color:#412402}\n.fp-inclus-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}\n.fp-inclus-item{background:#fff;border-radius:8px;padding:.75rem;text-align:center}\n.fp-inclus-item .ii-icon{font-size:18px;margin-bottom:.3rem;display:block}\n.fp-inclus-item .ii-title{font-size:12px;font-weight:500}.fp-inclus-item .ii-desc{font-size:11px;color:#666;line-height:1.4}\n.fp-specs{background:#f7f7f5;border-radius:10px;padding:1rem 1.25rem;margin:1.25rem 0;overflow-x:auto}\n.fp-specs table{width:100%;border-collapse:collapse;font-size:13px}\n.fp-specs td{padding:6px 8px;border-bottom:1px solid #e8e8e8}\n.fp-specs td:first-child{font-weight:500;color:#555;width:45%}\n.fp-specs tr:last-child td{border-bottom:none}\n.fp-gift{background:#fffdf7;border:1px solid #FAC775;border-radius:10px;padding:1rem 1.25rem;margin:1.25rem 0;font-size:13px;color:#412402}\n.fp-faq{margin:1.25rem 0}.fp-faq-item{border-bottom:1px solid #eee;padding:.9rem 0}\n.fp-faq-item:last-child{border-bottom:none}.fp-faq-q{font-size:14px;font-weight:500;margin-bottom:.4rem}\n.fp-faq-a{font-size:13px;color:#555;line-height:1.6}\n@media(max-width:480px){.fp-benefits,.fp-inclus-grid{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\u003cdiv class=\"fp-body\"\u003e\n\u003cp class=\"fp-intro\"\u003eThe \u003cstrong\u003eNewton's Cradle\u003c\/strong\u003e — 5 suspended balls made entirely of \u003cstrong\u003emetal\u003c\/strong\u003e, on a \u003cstrong\u003emirror base\u003c\/strong\u003e. Dimensions: \u003cstrong\u003e12.7 × 10 × 7.5 cm\u003c\/strong\u003e. Clearly illustrates the principles of \u003cstrong\u003econservation of kinetic energy\u003c\/strong\u003e and momentum transfer. An educational, decorative, and fascinating object — for all ages.\u003c\/p\u003e\n\n\u003cdiv class=\"fp-benefits\"\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e⚡\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eConservation of Kinetic Energy\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eEach released ball transmits its energy through the stationary balls — the opposite ball rises with the same speed. Physics in its purest form, visible in real time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🔵\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003e5 All-Metal Balls\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eHeavy and precise metal balls, suspended on taut wires — optimal energy transmission and smooth, lasting oscillation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🪞\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eMirror Base\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eReflects the movement of the balls and creates a captivating visual effect — the reflection visually doubles the animation and adds a premium decorative dimension.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e📐\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003e12.7 × 10 × 7.5 cm\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eCompact size ideal for a desk, shelf, or display case — easy to handle and move for demonstrations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🎓\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eConcrete Educational Tool\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eIllustrates physics principles — conservation of energy, momentum transfer, damping — in a fun and memorable way.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🎁\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eUnusual Deco-Science Gift\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eFor physics enthusiasts, lovers of beautiful office objects, or original decorative accessories — for both children and adults.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-design\"\u003e\n\u003cdiv class=\"fd-icon\"\u003e🔵\u003c\/div\u003e\n\u003cdiv class=\"fd-text\"\u003e\n\u003cdiv class=\"fd-title\"\u003e5 metal balls · mirror base · 12.7 × 10 × 7.5 cm · kinetic energy conservation\u003c\/div\u003e\nNewton's Cradle is one of the most mesmerizing office objects available — and one of the most elegant to explain. Release one ball: the energy travels through the three stationary balls and propels the fifth one to the same height. Release two balls: two rise on the opposite side. Release three: three respond. It's not magic — it's Newton. The mirror base visually doubles the movement and transforms each oscillation into a decorative installation.\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-inclus\"\u003e\n\u003ch4\u003e📦 Contents\u003c\/h4\u003e\n\u003cdiv class=\"fp-inclus-grid\"\u003e\n\u003cdiv class=\"fp-inclus-item\"\u003e\n\u003cspan class=\"ii-icon\"\u003e🔵\u003c\/span\u003e\u003cdiv class=\"ii-title\"\u003e1 Newton's Cradle\u003c\/div\u003e\n\u003cdiv class=\"ii-desc\"\u003e5 suspended balls made entirely of metal\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-inclus-item\"\u003e\n\u003cspan class=\"ii-icon\"\u003e🪞\u003c\/span\u003e\u003cdiv class=\"ii-title\"\u003eMirror base\u003c\/div\u003e\n\u003cdiv class=\"ii-desc\"\u003eVisual effect · ball reflection\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-inclus-item\"\u003e\n\u003cspan class=\"ii-icon\"\u003e📐\u003c\/span\u003e\u003cdiv class=\"ii-title\"\u003e12.7 × 10 × 7.5 cm\u003c\/div\u003e\n\u003cdiv class=\"ii-desc\"\u003eCompact size · can be placed anywhere\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-specs\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalls\u003c\/td\u003e\n\u003ctd\u003e5 — entirely metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003ctd\u003eMirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12.7 × 10 × 7.5 cm (H × W × D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eMetal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhysical Principle\u003c\/td\u003e\n\u003ctd\u003eConservation of kinetic energy and momentum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUse\u003c\/td\u003e\n\u003ctd\u003eDecoration · education · office\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-tip\"\u003e\n\u003cp\u003e\u003cstrong\u003eTo go further:\u003c\/strong\u003e release 1 ball → 1 responds. Release 2 → 2 respond. Release 3 → 3 respond. Each configuration illustrates the conservation of momentum in a different way. The mirror base allows for simultaneous observation of the real movement and its reflection — a doubly captivating effect during demonstrations.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-gift\"\u003e\n🎁 \u003cstrong\u003eThe unusual office object for physics enthusiasts:\u003c\/strong\u003e 5 metal balls, mirror base, 12.7 × 10 × 7.5 cm. An \u003cstrong\u003eoriginal gift\u003c\/strong\u003e for a \u003cstrong\u003ebirthday, Christmas, office gift, or teacher gift\u003c\/strong\u003e — for any admirer of science, decorative objects, or mechanical curiosities.\n\u003c\/div\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:500;margin:1.5rem 0 0.5rem;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cdiv class=\"fp-faq\"\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eWhat physical principle does Newton's Cradle illustrate?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eNewton's Cradle illustrates the conservation of kinetic energy and momentum. When one ball strikes the others, energy is transmitted through the stationary balls and propels the opposite ball to the same height — and with the same speed — as the initial ball.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eWhat happens if several balls are released at the same time?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eIf you release 2 balls together, 2 rise on the opposite side. If you release 3, 3 respond. This illustrates that it is the number of balls (and thus the momentum) that is conserved, not just the energy. Some balls gradually stop due to damping from friction and air resistance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eIs it suitable for children?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eYes — Newton's Cradle is suitable for all ages. For children, it's a fun and fascinating object. For teenagers and adults, it's a concrete educational tool for understanding physics principles. The solid metal makes it robust and durable.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eHow long do the balls swing for?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eThe pendulum swings for several minutes before stopping due to natural damping (wire friction, air resistance). The more energetically the balls are released, the longer the oscillation lasts. The gradual damping itself is an interesting physical phenomenon to observe.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"Quel principe physique illustre le pendule de Newton ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Conservation de l'énergie cinétique et du momentum. La bille frappée transmet son énergie à travers les billes immobiles et propulse la bille opposée à la même hauteur et vitesse.\"}},\n{\"@type\":\"Question\",\"name\":\"Que se passe-t-il si on lance plusieurs billes ensemble ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"2 billes lancées → 2 répondent. 3 lancées → 3 répondent. C'est la quantité de mouvement qui est conservée. L'amortissement progressif par friction et résistance de l'air est aussi visible.\"}},\n{\"@type\":\"Question\",\"name\":\"Adapté pour les enfants ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oui — tous âges. Ludique pour les enfants, pédagogique pour ados et adultes. Métal robuste et durable.\"}},\n{\"@type\":\"Question\",\"name\":\"Combien de temps les billes oscillent-elles ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Plusieurs minutes avant amortissement naturel. L'amortissement progressif est lui-même un phénomène physique intéressant à observer.\"}}\n]}\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Atelier Atypique","offers":[{"title":"Default Title","offer_id":30286189953071,"sku":"5159014","price":24.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/products\/product-image-231523592_584b7bd1-b4c9-496f-b5a2-15e9f910dd89.jpg?v=1771627457"},{"product_id":"pendule-sable-de-foucault","title":"Foucault Pendulum - Sand","description":"\u003cmeta charset=\"UTF-8\"\u003e\u003cstyle\u003e\n.fp-body{font-family:sans-serif;color:#1a1a1a;line-height:1.7;font-size:15px;max-width:760px}\n.fp-body p{margin:0 0 1rem}.fp-body a{color:#185FA5;text-decoration:none}\n.fp-intro{font-size:15px;color:#333;margin-bottom:1.25rem;line-height:1.7}\n.fp-benefits{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:1.25rem 0}\n.fp-benefit{background:#f7f7f5;border-radius:8px;padding:.75rem 1rem;display:flex;align-items:flex-start;gap:10px}\n.fp-benefit .fb-icon{font-size:18px;flex-shrink:0}.fp-benefit .fb-text{font-size:13px;line-height:1.5}\n.fp-benefit .fb-title{font-weight:500;margin-bottom:2px}.fp-benefit .fb-desc{color:#666}\n.fp-design{background:#1a1a1a;border-radius:12px;padding:1.25rem 1.5rem;margin:1.25rem 0;display:flex;align-items:flex-start;gap:14px}\n.fp-design .fd-icon{font-size:28px;flex-shrink:0}.fp-design .fd-text{color:#fff;font-size:13px;line-height:1.6}\n.fp-design .fd-title{font-weight:600;font-size:14px;margin-bottom:5px;color:#FAC775}\n.fp-tip{background:#E1F5EE;border-left:4px solid #1D9E75;border-radius:0 8px 8px 0;padding:1rem 1.25rem;margin:1.25rem 0}\n.fp-tip p{margin:0;color:#04342C;font-size:13px}.fp-tip strong{color:#085041}\n.fp-specs{background:#f7f7f5;border-radius:10px;padding:1rem 1.25rem;margin:1.25rem 0;overflow-x:auto}\n.fp-specs table{width:100%;border-collapse:collapse;font-size:13px}\n.fp-specs td{padding:6px 8px;border-bottom:1px solid #e8e8e8}\n.fp-specs td:first-child{font-weight:500;color:#555;width:45%}\n.fp-specs tr:last-child td{border-bottom:none}\n.fp-gift{background:#fffdf7;border:1px solid #FAC775;border-radius:10px;padding:1rem 1.25rem;margin:1.25rem 0;font-size:13px;color:#412402}\n.fp-faq{margin:1.25rem 0}.fp-faq-item{border-bottom:1px solid #eee;padding:.9rem 0}\n.fp-faq-item:last-child{border-bottom:none}.fp-faq-q{font-size:14px;font-weight:500;margin-bottom:.4rem}\n.fp-faq-a{font-size:13px;color:#555;line-height:1.6}\n@media(max-width:480px){.fp-benefits{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\u003cdiv class=\"fp-body\"\u003e\n\u003cp class=\"fp-intro\"\u003eThe \u003cstrong\u003eSand Foucault Pendulum\u003c\/strong\u003e — a \u003cstrong\u003emetal\u003c\/strong\u003e pendulum oscillating over a basin of \u003cstrong\u003efine sand\u003c\/strong\u003e, on an \u003cstrong\u003eABS\u003c\/strong\u003e body. Dimensions: \u003cstrong\u003e39 × 16 × 14 cm\u003c\/strong\u003e. Traces complex and unique patterns with each oscillation — variable curve, amplitude, speed, and direction of rotation. An exceptional decorative object at the intersection of science and art.\u003c\/p\u003e\n\n\u003cdiv class=\"fp-benefits\"\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🌀\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eUnique patterns with each oscillation\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eThe pendulum traces complex curves in the sand — each figure is different depending on the amplitude, speed, and direction of rotation. No pattern is ever exactly repeated.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e⚙️\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eInfinite variables\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003ePlay with the curve shape, amplitude, speed, and direction of rotation — the possibilities for geometric figures are literally infinite.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🔩\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eABS body + metal pendulum\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eRobust and lightweight ABS structure, metal pendulum for optimal inertia and smooth, prolonged oscillation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e📐\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003e39 × 16 × 14 cm\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eImposing dimensions make it a decorative centerpiece — draws attention and admiration in any space.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🎨\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eArt and science combined\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eThe Foucault pendulum is one of the most poetic scientific instruments — it transforms the physics of motion into ephemeral drawings on sand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🎁\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eExceptional gift\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eFor science, art, and design enthusiasts who appreciate the blend of aesthetics and knowledge — an object unlike any other.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-design\"\u003e\n\u003cdiv class=\"fd-icon\"\u003e🌀\u003c\/div\u003e\n\u003cdiv class=\"fd-text\"\u003e\n\u003cdiv class=\"fd-title\"\u003eSand Foucault Pendulum — ABS · metal · fine sand · 39 × 16 × 14 cm · infinite patterns\u003c\/div\u003e\nLaunch the pendulum. It swings over the basin of fine sand, and its tip begins to trace. First a line. Then the trajectory widens, curves, draws an ellipse, a star, a spiral. Geometric figures gradually appear, with mathematical precision and unexpected beauty. Change the amplitude, alter the direction, vary the speed — and watch the physics of motion transform into ephemeral art with each oscillation. This is the principle of the Foucault pendulum, made visible and tangible on your desk.\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-specs\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterials\u003c\/td\u003e\n\u003ctd\u003eABS (body) + Metal (pendulum) + Fine sand\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e39 × 16 × 14 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrinciple\u003c\/td\u003e\n\u003ctd\u003eFoucault Pendulum — pattern tracing in sand\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVariables\u003c\/td\u003e\n\u003ctd\u003eCurve · amplitude · speed · direction of rotation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003eNone — mechanical energy of the pendulum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eDecoration · scientific demonstration · gift\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-tip\"\u003e\n\u003cp\u003e\u003cstrong\u003eFor more complex patterns:\u003c\/strong\u003e launch the pendulum with a slight rotation at the start (an elliptical rather than linear motion) — the resulting figures will be remarkable Lissajous curves with geometric shapes. The greater the initial amplitude, the more extensive and complex the figures. Regularly smooth the sand between sessions to start with a blank surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-gift\"\u003e\n🎁 \u003cstrong\u003eThe decorative object for curious minds:\u003c\/strong\u003e ABS + metal + sand, 39 × 16 × 14 cm, infinite geometric patterns. An \u003cstrong\u003eexceptional gift\u003c\/strong\u003e for a \u003cstrong\u003ebirthday, Christmas, office gift, or teacher gift\u003c\/strong\u003e — for any enthusiast of science, kinetic art, and unique design.\n\u003c\/div\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:500;margin:1.5rem 0 0.5rem;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cdiv class=\"fp-faq\"\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eHow does the sand Foucault pendulum work?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eThe metal pendulum is suspended above a basin of fine sand. When set in motion, it oscillates freely, and its tip traces patterns in the sand according to its trajectory. By changing the amplitude, speed, or direction of rotation at the start, different geometric figures are obtained — ellipses, stars, spirals.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eAre the patterns always the same?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eNo — each oscillation produces different patterns depending on the launch parameters (amplitude, speed, direction, angle). The combinations are practically infinite. Simply smooth the sand and relaunch the pendulum differently to get an entirely new figure.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eDoes it require electricity?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eNo — the pendulum operates solely on the mechanical energy imparted during launch. No batteries, no cables. The oscillation naturally lasts several minutes depending on the initial amplitude, then the pendulum comes to a stop through natural damping.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eCan the sand be refilled or replaced?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eYes — the sand basin can be filled with any suitable fine sand if needed. Dry, fine sand with a homogeneous grain size will yield the best results for precise and clear patterns.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"How does the sand Foucault pendulum work?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A metal pendulum oscillates over a sand basin. It traces geometric patterns according to amplitude, speed, and direction of rotation. Different figures with each launch.\"}},\n{\"@type\":\"Question\",\"name\":\"Are the patterns always the same?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — infinite combinations possible depending on parameters. Smooth the sand between sessions to start with a blank surface.\"}},\n{\"@type\":\"Question\",\"name\":\"Is electricity required?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — mechanical energy only. No batteries or cables. Oscillates for several minutes by natural damping.\"}},\n{\"@type\":\"Question\",\"name\":\"Can the sand be replaced?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — any fine, dry, homogeneous sand is suitable. Gives the best results for precise patterns.\"}}\n]}\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Atelier Atypique","offers":[{"title":"Black","offer_id":46755483222339,"sku":"1005004955503802-black","price":49.9,"currency_code":"EUR","in_stock":true},{"title":"Blue","offer_id":46755483156803,"sku":"1005004955503802-blue","price":49.9,"currency_code":"EUR","in_stock":true},{"title":"Red","offer_id":46755483189571,"sku":"1005004955503802-red","price":49.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/Saef48ec68f764e669b50765c9b76f48aQ.jpg?v=1771638779"},{"product_id":"gyroscope-anti-gravite-leon-foucault","title":"Anti Gravity Gyroscope - Léon Foucault","description":"\u003cmeta charset=\"UTF-8\"\u003e\u003cstyle\u003e\n.fp-body{font-family:sans-serif;color:#1a1a1a;line-height:1.7;font-size:15px;max-width:760px}\n.fp-body p{margin:0 0 1rem}.fp-body a{color:#185FA5;text-decoration:none}\n.fp-intro{font-size:15px;color:#333;margin-bottom:1.25rem;line-height:1.7}\n.fp-benefits{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:1.25rem 0}\n.fp-benefit{background:#f7f7f5;border-radius:8px;padding:.75rem 1rem;display:flex;align-items:flex-start;gap:10px}\n.fp-benefit .fb-icon{font-size:18px;flex-shrink:0}.fp-benefit .fb-text{font-size:13px;line-height:1.5}\n.fp-benefit .fb-title{font-weight:500;margin-bottom:2px}.fp-benefit .fb-desc{color:#666}\n.fp-design{background:#1a1a1a;border-radius:12px;padding:1.25rem 1.5rem;margin:1.25rem 0;display:flex;align-items:flex-start;gap:14px}\n.fp-design .fd-icon{font-size:28px;flex-shrink:0}.fp-design .fd-text{color:#fff;font-size:13px;line-height:1.6}\n.fp-design .fd-title{font-weight:600;font-size:14px;margin-bottom:5px;color:#FAC775}\n.fp-tip{background:#E1F5EE;border-left:4px solid #1D9E75;border-radius:0 8px 8px 0;padding:1rem 1.25rem;margin:1.25rem 0}\n.fp-tip p{margin:0;color:#04342C;font-size:13px}.fp-tip strong{color:#085041}\n.fp-specs{background:#f7f7f5;border-radius:10px;padding:1rem 1.25rem;margin:1.25rem 0;overflow-x:auto}\n.fp-specs table{width:100%;border-collapse:collapse;font-size:13px}\n.fp-specs td{padding:6px 8px;border-bottom:1px solid #e8e8e8}\n.fp-specs td:first-child{font-weight:500;color:#555;width:45%}\n.fp-specs tr:last-child td{border-bottom:none}\n.fp-gift{background:#fffdf7;border:1px solid #FAC775;border-radius:10px;padding:1rem 1.25rem;margin:1.25rem 0;font-size:13px;color:#412402}\n.fp-faq{margin:1.25rem 0}.fp-faq-item{border-bottom:1px solid #eee;padding:.9rem 0}\n.fp-faq-item:last-child{border-bottom:none}.fp-faq-q{font-size:14px;font-weight:500;margin-bottom:.4rem}\n.fp-faq-a{font-size:13px;color:#555;line-height:1.6}\n@media(max-width:480px){.fp-benefits{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\u003cdiv class=\"fp-body\"\u003e\n\u003cp class=\"fp-intro\"\u003eThe \u003cstrong\u003eAnti-Gravity Metal Gyroscope\u003c\/strong\u003e — a central rotor with stable and fluid rotation based on the \u003cstrong\u003econservation of angular momentum\u003c\/strong\u003e. Dimensions: \u003cstrong\u003eH8.2 × W6.2 cm\u003c\/strong\u003e. Available in \u003cstrong\u003e2 versions\u003c\/strong\u003e: Classic (stainless steel) and Premium (polished metal). \u003cstrong\u003eMetal stand included\u003c\/strong\u003e for display and scientific demonstrations.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:500;margin:1.5rem 0 .5rem\"\u003e2 versions available\u003c\/h3\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:.75rem 0 1.25rem\"\u003e\n\u003cdiv style=\"background:#fff;border:.5px solid #e0e0e0;border-radius:8px;overflow:hidden\"\u003e\n\u003cdiv style=\"height:48px;background:linear-gradient(135deg,#8A9BA8 0%,#C8D4DC 50%,#A0B0BC 100%);display:flex;align-items:center;justify-content:center;font-size:20px\"\u003e⚙️\u003c\/div\u003e\n\u003cdiv style=\"padding:8px 12px\"\u003e\n\u003cdiv style=\"font-size:13px;font-weight:600;color:#1a1a1a\"\u003eClassic Version\u003c\/div\u003e\n\u003cdiv style=\"font-size:11px;color:#888;margin-top:3px\"\u003eStainless steel — optimal durability\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff;border:.5px solid #e0e0e0;border-radius:8px;overflow:hidden\"\u003e\n\u003cdiv style=\"height:48px;background:linear-gradient(135deg,#B8860B 0%,#FFD700 50%,#DAA520 100%);display:flex;align-items:center;justify-content:center;font-size:20px\"\u003e✨\u003c\/div\u003e\n\u003cdiv style=\"padding:8px 12px\"\u003e\n\u003cdiv style=\"font-size:13px;font-weight:600;color:#1a1a1a\"\u003ePremium Edition\u003c\/div\u003e\n\u003cdiv style=\"font-size:11px;color:#888;margin-top:3px\"\u003ePolished metal — elegant and refined finish\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-benefits\"\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🌀\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eConservation of angular momentum\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eThe rapidly spinning central rotor maintains its axis stable regardless of the support's inclination — the gyroscopic effect made visible and tangible.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e⚙️\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eRobust central rotor\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eStable and fluid rotation mechanism — machining precision ensures long and regular rotation, an essential characteristic of a quality gyroscope.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🏛️\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eMetal stand included\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eDedicated stand to display the gyroscope or perform scientific demonstrations — the object finds its place equally well on a desk or in a classroom.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🎓\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eNavigation, stabilization, space\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eThe gyroscopic principle is used in aeronautics, marine navigation, and space exploration — this gyroscope concretely illustrates real technologies.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e📐\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eH8.2 × W6.2 cm — desk format\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eCompact and portable format — on a desk, shelf or display case. Lightweight and easy to transport for classroom or on-the-go demonstrations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🎁\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eScience \u0026amp; mechanics gift\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eFor physics enthusiasts, engineers, students and curious people of all ages — an educational and decorative object that has fascinated for generations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-design\"\u003e\n\u003cdiv class=\"fd-icon\"\u003e🌀\u003c\/div\u003e\n\u003cdiv class=\"fd-text\"\u003e\n\u003cdiv class=\"fd-title\"\u003eMetal Gyroscope · H8.2 × W6.2 cm · 2 versions (stainless steel \/ polished metal) · stand included\u003c\/div\u003e\nThe gyroscope is one of the most fascinating and counter-intuitive scientific instruments that exist. Spin the rotor: it resists any attempt to make it fall, maintains its axis stable against gravity, and takes improbable inclinations. This is the same principle that guides satellites, stabilizes airplanes, and orients submarines. In Classic stainless steel or Premium polished metal version, with its dedicated stand — for your desk or your physics class.\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-specs\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eClassic Version\u003c\/td\u003e\n\u003ctd\u003eStainless steel — optimal durability\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePremium Version\u003c\/td\u003e\n\u003ctd\u003ePolished metal — elegant and refined finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eHeight 8.2 cm × Width 6.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanism\u003c\/td\u003e\n\u003ctd\u003eCentral rotor — stable and fluid rotation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrinciple\u003c\/td\u003e\n\u003ctd\u003eConservation of angular momentum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory included\u003c\/td\u003e\n\u003ctd\u003eMetal stand for display \/ demonstration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eEducation · demonstration · collection · decoration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-tip\"\u003e\n\u003cp\u003e\u003cstrong\u003eFor optimal rotation:\u003c\/strong\u003e launch the rotor quickly with the provided string or between your palms. The more energetic the launch, the longer and more stable the rotation. Place the spinning gyroscope on its stand to observe the full gyroscopic effect — it maintains its inclination against all odds. The Premium edition, thanks to its finer bearings, generally offers longer and quieter rotations.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-gift\"\u003e\n🎁 \u003cstrong\u003eThe science gift for all ages:\u003c\/strong\u003e metal, H8.2 × W6.2 cm, 2 versions, stand included. An \u003cstrong\u003eeducational and decorative gift\u003c\/strong\u003e for a \u003cstrong\u003ebirthday, Christmas, teacher gift or engineer gift\u003c\/strong\u003e — for any physics, mechanics, and beautiful scientific object enthusiast.\n\u003c\/div\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:500;margin:1.5rem 0 0.5rem;\"\u003eFrequently asked questions\u003c\/h3\u003e\n\n\u003cdiv class=\"fp-faq\"\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eWhat is the difference between the Classic version and the Premium Edition?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eThe Classic version is made of stainless steel — robust, durable, and resistant. The Premium Edition is made of polished metal with a more elegant and refined finish — generally finer bearings for longer and quieter rotations. The dimensions (H8.2 × W6.2 cm) and basic performance are identical.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eHow does the gyroscope's anti-gravity effect work?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eThe \"anti-gravity\" effect is based on the conservation of angular momentum. A rapidly spinning rotor resists any change in its axis's orientation — this is the gyroscopic force. The gyroscope can thus be balanced on a single point or held in an inclined position, defying intuitive expectations about gravity.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eWhat is the included metal stand used for?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eThe stand serves two purposes: (1) Display — place the gyroscope prominently on a desk or shelf as a decorative object. (2) Demonstration — perform physics experiments by placing the spinning gyroscope on the tip of the stand to observe the gyroscopic precession effect.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eIs it suitable for children?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eYes — but supervise young children. The metal gyroscope is an educational tool designed for all ages, but the metal parts require careful handling. Ideal for children aged 8-10 and adults who are passionate about physics.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"Différence entre version Classique et Premium ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Classique : acier inoxydable robuste. Premium : métal poli élégant, roulements plus fins pour rotations plus longues. Mêmes dimensions H8,2×L6,2 cm.\"}},\n{\"@type\":\"Question\",\"name\":\"Comment fonctionne l'effet anti-gravité ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Conservation du moment angulaire — le rotor en rotation rapide résiste aux changements d'axe (force gyroscopique). Permet équilibre sur un seul point et positions inclinées.\"}},\n{\"@type\":\"Question\",\"name\":\"À quoi sert le support en métal ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Exposition (décoration bureau) et démonstration (gyroscope en rotation sur la pointe pour observer la précession gyroscopique).\"}},\n{\"@type\":\"Question\",\"name\":\"Convient pour les enfants ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oui avec supervision. Idéal dès 8-10 ans. Métal demande manipulation attentive.\"}}\n]}\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Atelier Atypique","offers":[{"title":"Classic","offer_id":49423509717315,"sku":"1005007174545511-A","price":49.9,"currency_code":"EUR","in_stock":true},{"title":"Premium","offer_id":49423509750083,"sku":"1005007174545511-B","price":59.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/Sea60f0b340824408adf1cc8d9b929edcZ.webp?v=1771645116"},{"product_id":"gyroscope-auto-equilibrant-anti-gravity-jouet-de-decompression-educatif","title":"Anti-Gravity Self-Balancing Gyroscope – Educational Decompression Toy","description":"\u003cmeta charset=\"UTF-8\"\u003e\u003cstyle\u003e\n.fp-body{font-family:sans-serif;color:#1a1a1a;line-height:1.7;font-size:15px;max-width:760px}\n.fp-body p{margin:0 0 1rem}.fp-body a{color:#185FA5;text-decoration:none}\n.fp-intro{font-size:15px;color:#333;margin-bottom:1.25rem;line-height:1.7}\n.fp-benefits{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:1.25rem 0}\n.fp-benefit{background:#f7f7f5;border-radius:8px;padding:.75rem 1rem;display:flex;align-items:flex-start;gap:10px}\n.fp-benefit .fb-icon{font-size:18px;flex-shrink:0}.fp-benefit .fb-text{font-size:13px;line-height:1.5}\n.fp-benefit .fb-title{font-weight:500;margin-bottom:2px}.fp-benefit .fb-desc{color:#666}\n.fp-design{background:#1a1a1a;border-radius:12px;padding:1.25rem 1.5rem;margin:1.25rem 0;display:flex;align-items:flex-start;gap:14px}\n.fp-design .fd-icon{font-size:28px;flex-shrink:0}.fp-design .fd-text{color:#fff;font-size:13px;line-height:1.6}\n.fp-design .fd-title{font-weight:600;font-size:14px;margin-bottom:5px;color:#FAC775}\n.fp-tip{background:#E1F5EE;border-left:4px solid #1D9E75;border-radius:0 8px 8px 0;padding:1rem 1.25rem;margin:1.25rem 0}\n.fp-tip p{margin:0;color:#04342C;font-size:13px}.fp-tip strong{color:#085041}\n.fp-specs{background:#f7f7f5;border-radius:10px;padding:1rem 1.25rem;margin:1.25rem 0;overflow-x:auto}\n.fp-specs table{width:100%;border-collapse:collapse;font-size:13px}\n.fp-specs td{padding:6px 8px;border-bottom:1px solid #e8e8e8}\n.fp-specs td:first-child{font-weight:500;color:#555;width:45%}\n.fp-specs tr:last-child td{border-bottom:none}\n.fp-gift{background:#fffdf7;border:1px solid #FAC775;border-radius:10px;padding:1rem 1.25rem;margin:1.25rem 0;font-size:13px;color:#412402}\n.fp-faq{margin:1.25rem 0}.fp-faq-item{border-bottom:1px solid #eee;padding:.9rem 0}\n.fp-faq-item:last-child{border-bottom:none}.fp-faq-q{font-size:14px;font-weight:500;margin-bottom:.4rem}\n.fp-faq-a{font-size:13px;color:#555;line-height:1.6}\n@media(max-width:480px){.fp-benefits{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\u003cdiv class=\"fp-body\"\u003e\n\u003cp class=\"fp-intro\"\u003eThe \u003cstrong\u003eanti-gravity self-balancing gyroscope\u003c\/strong\u003e — high-quality metal, finished with \u003cstrong\u003evacuum plating\u003c\/strong\u003e and precision engraving. Dimensions: \u003cstrong\u003e13.2 × 7 cm\u003c\/strong\u003e. Stable, smooth, and silent rotation. \u003cstrong\u003e5 colors\u003c\/strong\u003e: Royal Gold, Ebony Black, Glacial Silver, Imperial Copper, Iridescent Rainbow. Anti-stress, educational, and decorative.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:500;margin:1.5rem 0 .5rem\"\u003e5 colors available\u003c\/h3\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:.75rem 0 1.25rem\"\u003e\n\u003cdiv style=\"background:#fff;border:.5px solid #e0e0e0;border-radius:8px;overflow:hidden\"\u003e\n\u003cdiv style=\"height:36px;background:linear-gradient(135deg,#B8860B 0%,#FFD700 50%,#DAA520 100%)\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding:5px 6px;font-size:11px;font-weight:500;color:#1a1a1a\"\u003eRoyal Gold\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff;border:.5px solid #e0e0e0;border-radius:8px;overflow:hidden\"\u003e\n\u003cdiv style=\"height:36px;background:linear-gradient(135deg,#0a0a0a 0%,#2a2a2a 50%,#1a1a1a 100%)\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding:5px 6px;font-size:11px;font-weight:500;color:#1a1a1a\"\u003eEbony Black\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff;border:.5px solid #e0e0e0;border-radius:8px;overflow:hidden\"\u003e\n\u003cdiv style=\"height:36px;background:linear-gradient(135deg,#C0C0C0 0%,#E8E8E8 50%,#A8A8A8 100%)\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding:5px 6px;font-size:11px;font-weight:500;color:#1a1a1a\"\u003eGlacial Silver\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff;border:.5px solid #e0e0e0;border-radius:8px;overflow:hidden\"\u003e\n\u003cdiv style=\"height:36px;background:linear-gradient(135deg,#8B4513 0%,#CD7F32 50%,#A0522D 100%)\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding:5px 6px;font-size:11px;font-weight:500;color:#1a1a1a\"\u003eImperial Copper\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff;border:.5px solid #e0e0e0;border-radius:8px;overflow:hidden\"\u003e\n\u003cdiv style=\"height:36px;background:linear-gradient(135deg,#FF0080 0%,#7B00FF 25%,#00BFFF 50%,#00FF80 75%,#FFD700 100%)\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding:5px 6px;font-size:11px;font-weight:500;color:#1a1a1a\"\u003eIridescent Rainbow\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-benefits\"\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🌀\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eStable and silent rotation\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eGyroscopic self-balancing principle — smooth and continuous rotation without any shaking or parasitic noise. The silence of perfect physics.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e✨\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eVacuum plating finish\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eVacuum plating process that provides exceptional shine and superior durability — combined with precision engraving for a uniformly polished surface.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🧘\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eAnti-stress \u0026amp; decompression\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eWatching it spin soothes — the hypnotic rotation and self-balancing movement have an immediate calming effect on stress and anxiety.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e⚗️\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003ePrinciples of gravity and balance\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eIllustrates the laws of physics concretely — gyroscopic effect, conservation of angular momentum, precession. A fascinating educational tool.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e📐\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003e13.2 × 7 cm — high-quality metal\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eCompact and robust desk format — metal designed to last, resistant to shocks and retaining its shine over time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🎁\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003e5 exclusive colors\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eRoyal Gold, Ebony Black, Glacial Silver, Imperial Copper, or Iridescent Rainbow (changes with light) — a gyroscope for every personality.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-design\"\u003e\n\u003cdiv class=\"fd-icon\"\u003e🌀\u003c\/div\u003e\n\u003cdiv class=\"fd-text\"\u003e\n\u003cdiv class=\"fd-title\"\u003eAnti-gravity gyroscope — polished metal · vacuum plated · 13.2 × 7 cm · 5 colors\u003c\/div\u003e\nSpin it. It rotates. It balances. It refuses to fall. The anti-gravity gyroscope leverages the laws of classical mechanics to maintain its axis of rotation stable against any attempt at imbalance — it's the gyroscopic force visible to the naked eye. The vacuum plating finish gives it the luster of a mechanical jewel. Royal Gold for majesty, Ebony Black for mystery, Iridescent Rainbow for spectacle — choose your universe.\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-specs\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-quality metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eVacuum plating + precision engraving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e13.2 × 7 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColors\u003c\/td\u003e\n\u003ctd\u003eRoyal Gold \/ Ebony Black \/ Glacial Silver \/ Imperial Copper \/ Iridescent Rainbow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrinciple\u003c\/td\u003e\n\u003ctd\u003eGyroscopic self-balancing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperation\u003c\/td\u003e\n\u003ctd\u003eSilent — no shaking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eAnti-stress · education · desk decoration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-tip\"\u003e\n\u003cp\u003e\u003cstrong\u003eFor optimal rotation:\u003c\/strong\u003e launch the gyroscope by rapidly spinning the outer ring between your palms. The more energetic the launch, the longer and more stable the rotation will be. Place it on a flat surface to observe the full gyroscopic effect — it maintains its initial tilt regardless of the support's movement.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-gift\"\u003e\n🎁 \u003cstrong\u003eThe science \u0026amp; design gift for everyone:\u003c\/strong\u003e polished vacuum-plated metal, 13.2 × 7 cm, 5 colors to choose from. A \u003cstrong\u003eunique gift\u003c\/strong\u003e for a \u003cstrong\u003ebirthday, Christmas, office gift, or anti-stress gift\u003c\/strong\u003e — for children, adults, science enthusiasts, and collectors.\n\u003c\/div\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:500;margin:1.5rem 0 0.5rem;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cdiv class=\"fp-faq\"\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eWhat is the gyroscopic effect?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eThe gyroscopic effect is the tendency of a rapidly rotating body to resist any change in the orientation of its axis of rotation. This principle allows the gyroscope to maintain its stability and balance — and gives it that fascinating \"anti-gravity\" appearance to observe.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eWhat is the difference between the 5 colors?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eThe 5 colors are obtained by vacuum plating — same base metal, different finishes: Royal Gold (brilliant gold), Ebony Black (deep black), Glacial Silver (sparkling silver), Imperial Copper (warm vintage copper), Iridescent Rainbow (multicolored, changing with light). Same dimensions and performance for all colors.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eIs it suitable for children?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eYes — suitable for both children and adults. For children, it's a fascinating educational object to learn the principles of gravity and balance. For adults, it's anti-stress and decorative. Note that small metal parts require supervision for very young children.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eHow do I launch the gyroscope?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eRapidly spin the outer ring between your two palms (like starting a fire with a stick) for 3 to 5 seconds. Release and observe the stable and silent rotation. To extend the rotation time, re-spin the ring while the gyroscope is already rotating.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"Qu'est-ce que l'effet gyroscopique ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Résistance d'un corps en rotation rapide à tout changement d'orientation de son axe. Maintient la stabilité et l'équilibre — l'effet 'anti-gravity' fascinant visible à l'œil nu.\"}},\n{\"@type\":\"Question\",\"name\":\"Différence entre les 5 coloris ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Même métal, finitions placage sous vide différentes : Or Royal, Noir Ébène, Argent Glacial, Cuivre Impérial, Irisé Arc-en-Ciel (multicolore changeant selon la lumière). Mêmes dimensions pour tous.\"}},\n{\"@type\":\"Question\",\"name\":\"Convient-il aux enfants ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oui — enfants et adultes. Éducatif pour la physique, anti-stress pour adultes. Supervision recommandée pour les jeunes enfants.\"}},\n{\"@type\":\"Question\",\"name\":\"Comment lancer le gyroscope ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Faire tourner l'anneau extérieur rapidement entre les paumes 3-5 secondes puis relâcher. Relancer pendant la rotation pour allonger la durée.\"}}\n]}\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Atelier Atypique","offers":[{"title":"Royal Gold","offer_id":49423622308163,"sku":"1005006352406821-A gold","price":24.9,"currency_code":"EUR","in_stock":true},{"title":"Frozen Silver","offer_id":49423622177091,"sku":"1005006352406821-A silver","price":24.9,"currency_code":"EUR","in_stock":true},{"title":"Black Ebony","offer_id":49423622209859,"sku":"1005006352406821-A black","price":24.9,"currency_code":"EUR","in_stock":true},{"title":"Iridescent Rainbow","offer_id":49423622242627,"sku":"1005006352406821-A Colorful","price":24.9,"currency_code":"EUR","in_stock":true},{"title":"Imperial Copper","offer_id":49423622275395,"sku":"1005006352406821-A rose gold","price":24.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/Sc7d8c86ef3e645f5a82d94bdb92ee308I.webp?v=1771645170"},{"product_id":"blocs-de-construction-anti-gravite-tensegrity-sculptures-diy","title":"Anti-Gravity Building Blocks - Tensegrity Sculptures DIY","description":"\u003cmeta charset=\"UTF-8\"\u003e\u003cstyle\u003e\n.fp-body{font-family:sans-serif;color:#1a1a1a;line-height:1.7;font-size:15px;max-width:760px}\n.fp-body p{margin:0 0 1rem}.fp-body a{color:#185FA5;text-decoration:none}\n.fp-intro{font-size:15px;color:#333;margin-bottom:1.25rem;line-height:1.7}\n.fp-benefits{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:1.25rem 0}\n.fp-benefit{background:#f7f7f5;border-radius:8px;padding:.75rem 1rem;display:flex;align-items:flex-start;gap:10px}\n.fp-benefit .fb-icon{font-size:18px;flex-shrink:0}.fp-benefit .fb-text{font-size:13px;line-height:1.5}\n.fp-benefit .fb-title{font-weight:500;margin-bottom:2px}.fp-benefit .fb-desc{color:#666}\n.fp-design{background:#1a1a1a;border-radius:12px;padding:1.25rem 1.5rem;margin:1.25rem 0;display:flex;align-items:flex-start;gap:14px}\n.fp-design .fd-icon{font-size:28px;flex-shrink:0}.fp-design .fd-text{color:#fff;font-size:13px;line-height:1.6}\n.fp-design .fd-title{font-weight:600;font-size:14px;margin-bottom:5px;color:#FAC775}\n.fp-inclus{background:#fffdf7;border:2px solid #FAC775;border-radius:12px;padding:1.25rem 1.5rem;margin:1.25rem 0}\n.fp-inclus h4{margin:0 0 .75rem;font-size:14px;font-weight:500;color:#412402}\n.fp-inclus-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}\n.fp-inclus-item{background:#fff;border-radius:8px;padding:.75rem;text-align:center}\n.fp-inclus-item .ii-icon{font-size:18px;margin-bottom:.3rem;display:block}\n.fp-inclus-item .ii-title{font-weight:500;font-size:12px}.fp-inclus-item .ii-desc{font-size:11px;color:#666;line-height:1.4}\n.fp-tip{background:#E1F5EE;border-left:4px solid #1D9E75;border-radius:0 8px 8px 0;padding:1rem 1.25rem;margin:1.25rem 0}\n.fp-tip p{margin:0;color:#04342C;font-size:13px}.fp-tip strong{color:#085041}\n.fp-specs{background:#f7f7f5;border-radius:10px;padding:1rem 1.25rem;margin:1.25rem 0;overflow-x:auto}\n.fp-specs table{width:100%;border-collapse:collapse;font-size:13px}\n.fp-specs td{padding:6px 8px;border-bottom:1px solid #e8e8e8}\n.fp-specs td:first-child{font-weight:500;color:#555;width:45%}\n.fp-specs tr:last-child td{border-bottom:none}\n.fp-gift{background:#fffdf7;border:1px solid #FAC775;border-radius:10px;padding:1rem 1.25rem;margin:1.25rem 0;font-size:13px;color:#412402}\n.fp-faq{margin:1.25rem 0}.fp-faq-item{border-bottom:1px solid #eee;padding:.9rem 0}\n.fp-faq-item:last-child{border-bottom:none}.fp-faq-q{font-weight:500;font-size:14px;margin-bottom:.4rem}\n.fp-faq-a{font-size:13px;color:#555;line-height:1.6}\n@media(max-width:480px){.fp-benefits,.fp-inclus-grid{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\u003cdiv class=\"fp-body\"\u003e\n\u003cp class=\"fp-intro\"\u003eThe \u003cstrong\u003eTensegrity Sculpture Anti-Gravity DIY\u003c\/strong\u003e set — a construction kit based on the effect of tension and balance that creates the illusion of a sculpture floating in the air. Height: \u003cstrong\u003e13 cm\u003c\/strong\u003e. Materials: \u003cstrong\u003edurable plastic\u003c\/strong\u003e. Tension chains included. Instructions provided. Educational, decorative, and captivating — for ages 8 and up.\u003c\/p\u003e\n\n\u003cdiv class=\"fp-benefits\"\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🌐\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eAnti-gravity effect by tensegrity\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eThe structure seems to float in the air — the principle of tensegrity (tension + integrity) keeps the blocks in apparent balance through tension chains.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🔧\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eComplete DIY kit\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eAll elements included — blocks, plastic chains, and easy-to-follow instructions. No tools required, assembly accessible from age 8.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e⚗️\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eTeaches physics through play\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eIllustrates the principles of tension, balance, opposing forces, and self-supporting structures — a fun and memorable educational tool.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🎨\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eIntriguing decorative object\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eOnce assembled, the sculpture becomes a modern and intriguing decorative piece — for the living room, office, or bedroom, it catches the eye and sparks conversation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e📐\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eH13 cm — compact size\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eCompact size of 13 cm in height — easily fits on a desk or shelf without clutter.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🎁\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eScience \u0026amp; creativity gift\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eIdeal for children (8+), adults, physics enthusiasts, teachers, parents, and collectors of original puzzles.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-design\"\u003e\n\u003cdiv class=\"fd-icon\"\u003e🌐\u003c\/div\u003e\n\u003cdiv class=\"fd-text\"\u003e\n\u003cdiv class=\"fd-title\"\u003eTensegrity — plastic · tension chains · H13 cm · DIY · visual anti-gravity\u003c\/div\u003e\nTensegrity is one of the most counter-intuitive structural principles in physics: compression elements (the blocks) held in balance solely by tension elements (the chains) — without ever touching directly. The visual result is stunning: the structure seems to float, defy gravity, and hold by a miracle. This kit allows you to assemble this phenomenon with your own hands and understand its laws. Then place it on your desk and watch your guests frown.\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-inclus\"\u003e\n\u003ch4\u003e📦 Kit contents\u003c\/h4\u003e\n\u003cdiv class=\"fp-inclus-grid\"\u003e\n\u003cdiv class=\"fp-inclus-item\"\u003e\n\u003cspan class=\"ii-icon\"\u003e🧱\u003c\/span\u003e\u003cdiv class=\"ii-title\"\u003eSet of blocks\u003c\/div\u003e\n\u003cdiv class=\"ii-desc\"\u003eHigh-quality durable plastic\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-inclus-item\"\u003e\n\u003cspan class=\"ii-icon\"\u003e🔗\u003c\/span\u003e\u003cdiv class=\"ii-title\"\u003eTension chains\u003c\/div\u003e\n\u003cdiv class=\"ii-desc\"\u003eMade of plastic — anti-gravity effect\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-inclus-item\"\u003e\n\u003cspan class=\"ii-icon\"\u003e📖\u003c\/span\u003e\u003cdiv class=\"ii-title\"\u003eInstructions\u003c\/div\u003e\n\u003cdiv class=\"ii-desc\"\u003eEasy to follow — quick assembly\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-specs\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-quality durable plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembled height\u003c\/td\u003e\n\u003ctd\u003e13 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrinciple\u003c\/td\u003e\n\u003ctd\u003eTensegrity — tension + compression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContents\u003c\/td\u003e\n\u003ctd\u003eBlocks + plastic chains + instructions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended age\u003c\/td\u003e\n\u003ctd\u003e8 years and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003ePlay · education · decoration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-tip\"\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is tensegrity?\u003c\/strong\u003e The word \"tensegrity\" is a portmanteau of \"tension\" and \"structural integrity.\" It refers to structures where compression elements (the blocks) never touch directly — they are held in balance solely by cables or chains in tension. Invented by engineer Buckminster Fuller, this principle is used in architecture, biology (the human body is a tensegrity structure!), and the arts. This kit makes it visible and tangible.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-gift\"\u003e\n🎁 \u003cstrong\u003eThe science gift for curious minds:\u003c\/strong\u003e durable plastic, H13 cm, tension chains, complete kit. An \u003cstrong\u003eoriginal gift\u003c\/strong\u003e for a \u003cstrong\u003ebirthday, Christmas, teacher gift, or child's gift\u003c\/strong\u003e — for any enthusiast of physics, construction, and intriguing decorative objects.\n\u003c\/div\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:500;margin:1.5rem 0 0.5rem;\"\u003eFrequently asked questions\u003c\/h3\u003e\n\n\u003cdiv class=\"fp-faq\"\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eWhat is tensegrity and why does the sculpture appear to float?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eTensegrity is a structural principle where compression elements (the blocks) are held in balance solely by tension elements (the chains), without ever touching directly. The human eye expects the lower elements to support the upper ones — tensegrity reverses this expectation and creates the illusion of levitation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eIs it difficult to assemble?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eNo — the kit is designed to be accessible for ages 8 and up. The included instructions guide step-by-step assembly. The main difficulty is adjusting the tension chains to find the perfect balance — which is part of the learning and experience.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eCan it be disassembled and reassembled?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eYes — the structure can be disassembled and reassembled as many times as desired. This also makes it an excellent educational tool for understanding the principles of tension and balance by experimenting with different configurations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eIs it suitable for interior decoration?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eYes — once assembled, the tensegrity sculpture becomes a modern and intriguing decorative piece, 13 cm in height. It finds its place on a desk, shelf, or coffee table and consistently becomes a talking point for visitors.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"Qu'est-ce que la tensegrité ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Blocs en compression maintenus par chaînes en tension sans se toucher. L'œil attend un support classique — la tensegrité inverse l'attente et crée l'illusion de lévitation.\"}},\n{\"@type\":\"Question\",\"name\":\"Difficile à assembler ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Non — dès 8 ans. Instructions incluses. La difficulté : régler les chaînes de tension pour l'équilibre parfait — partie de l'apprentissage.\"}},\n{\"@type\":\"Question\",\"name\":\"Peut-on démonter et remonter ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oui — démontable et remontable à volonté. Excellent pour expérimenter différentes configurations de tension et d'équilibre.\"}},\n{\"@type\":\"Question\",\"name\":\"Adapté pour la décoration ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oui — sculpture décorative 13 cm, moderne et intrigante. Bureau, étagère ou table basse. Sujet de conversation garanti.\"}}\n]}\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Atelier Atypique","offers":[{"title":"Default Title","offer_id":49423690596675,"sku":"1005006379806877-grey","price":16.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/S6c45c86d0df74a95a7069db53f592fd3s.webp?v=1771645205"},{"product_id":"moteur-stirling-experience-educative-kit-a-monter-diy","title":"Stirling Engine | Educational Experiment - DIY Assembly Kit","description":"\u003cstyle\u003e\n.aa-body{font-family:Georgia,serif;color:#1A1A1A;line-height:1.7;font-size:15px;max-width:760px;margin:0 auto;padding:1rem;background:#FAFAF7}\n.aa-body p{margin:0 0 1rem}\n.aa-intro{font-size:15px;margin-bottom:1.25rem}\n.aa-title{font-size:16px;font-weight:600;margin:1.75rem 0 .5rem;border-bottom:2px solid #FAC775;padding-bottom:4px;display:inline-block;letter-spacing:0.3px}\n.aa-sub{font-size:13px;color:#888;margin:0 0 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summary{font-size:14px;font-weight:700;color:#1A1A1A;cursor:pointer;list-style:none;padding-right:20px;position:relative}\n.aa-q summary::after{content:\"+\";position:absolute;right:0;top:0;color:#FAC775;font-size:18px;font-weight:700}\n.aa-q[open] summary::after{content:\"−\"}\n.aa-a{font-size:13px;color:#3a3a3a;line-height:1.7;margin-top:.5rem}\n.aa-a strong{color:#1A1A1A}\n@media(max-width:480px){.aa-ben{grid-template-columns:1fr!important}}\n\u003c\/style\u003e\n\n\u003cdiv class=\"aa-body\"\u003e\n\n\u003cp class=\"aa-intro\"\u003eThe \u003cstrong\u003ebuild-it-yourself Stirling engine\u003c\/strong\u003e is a \u003cstrong\u003escientific demonstration kit\u003c\/strong\u003e for mechanical enthusiasts, engineering students, and technical modeling hobbyists. Sold \u003cstrong\u003eas a DIY assembly kit\u003c\/strong\u003e, it offers a complete educational experience in two stages: first, the \u003cstrong\u003epleasure of manual assembly\u003c\/strong\u003e (a deep understanding of how it works by assembling it piece by piece), then the \u003cstrong\u003espectacle of its operation\u003c\/strong\u003e once the engine is complete. Designed on the principle invented in \u003cstrong\u003e1816 by Robert Stirling\u003c\/strong\u003e, this model faithfully reproduces the classic architecture of historical steam engines: \u003cstrong\u003ehorizontal piston\u003c\/strong\u003e, vintage-style spoked \u003cstrong\u003eflywheel\u003c\/strong\u003e, robust \u003cstrong\u003emetal base\u003c\/strong\u003e. Once assembled and activated by an appropriate heat source, it becomes a \u003cstrong\u003eliving and particularly spectacular demonstration of thermodynamic principles\u003c\/strong\u003e. Compact format of approximately \u003cstrong\u003e22 × 8 cm\u003c\/strong\u003e, ideal for display on a desk or shelf. An exceptional gift for those who like to \u003cstrong\u003eunderstand how things work\u003c\/strong\u003e. \u003cspan class=\"aa-diy-badge\"\u003eDIY Kit\u003c\/span\u003e \u003cspan class=\"aa-science-badge\"\u003eMechanical Demonstration\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch3 class=\"aa-title\"\u003eAdvantages of the build-it-yourself Stirling engine\u003c\/h3\u003e\n\u003cdiv class=\"aa-ben\"\u003e\n  \u003cdiv class=\"aa-b\"\u003e\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\u003cdiv class=\"tx\"\u003e\n\u003cdiv class=\"tt\"\u003eComplete assembly kit\u003c\/div\u003e\n\u003cdiv class=\"ds\"\u003eAll parts supplied, manual assembly pleasure included.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-b\"\u003e\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\u003cdiv class=\"tx\"\u003e\n\u003cdiv class=\"tt\"\u003eHands-on learning\u003c\/div\u003e\n\u003cdiv class=\"ds\"\u003eUnderstand how it works by assembling the components.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-b\"\u003e\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\u003cdiv class=\"tx\"\u003e\n\u003cdiv class=\"tt\"\u003eHistorical architecture\u003c\/div\u003e\n\u003cdiv class=\"ds\"\u003eHorizontal piston + spoked flywheel, 1900s steam engine design.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-b\"\u003e\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\u003cdiv class=\"tx\"\u003e\n\u003cdiv class=\"tt\"\u003eRobust metal base\u003c\/div\u003e\n\u003cdiv class=\"ds\"\u003eStable platform for display and operation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-b\"\u003e\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\u003cdiv class=\"tx\"\u003e\n\u003cdiv class=\"tt\"\u003eCompact 22 × 8 cm format\u003c\/div\u003e\n\u003cdiv class=\"ds\"\u003eEasily displayed on a desk, shelf, or in a display case.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-b\"\u003e\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\u003cdiv class=\"tx\"\u003e\n\u003cdiv class=\"tt\"\u003eAn object of pride to display\u003c\/div\u003e\n\u003cdiv class=\"ds\"\u003eOnce assembled, it becomes a unique collector's item.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-mat\"\u003e\n  \u003ch4\u003eThe Stirling engine principle\u003c\/h4\u003e\n  \u003cp\u003eInvented in \u003cstrong\u003e1816 by the Scottish pastor Robert Stirling\u003c\/strong\u003e, the Stirling engine is one of the \u003cstrong\u003emost elegant heat engines ever designed\u003c\/strong\u003e. Unlike modern internal combustion engines (gasoline, diesel) which operate by explosion inside the cylinder, the Stirling engine uses an \u003cstrong\u003eexternal heat source\u003c\/strong\u003e—flame, solar heat, steam—to alternately heat and cool a gas trapped in a cylinder. The \u003cstrong\u003ecyclic expansion and contraction\u003c\/strong\u003e of this gas set in motion a piston connected to a \u003cstrong\u003eflywheel\u003c\/strong\u003e that maintains rotation and delivers energy smoothly.\u003c\/p\u003e\n  \u003cp\u003eThis principle of \u003cstrong\u003eexternal thermal energy\u003c\/strong\u003e gives the Stirling engine several remarkable advantages: it is \u003cstrong\u003esilent\u003c\/strong\u003e (no explosions), \u003cstrong\u003eversatile\u003c\/strong\u003e (can operate with any heat source), and \u003cstrong\u003ereliable\u003c\/strong\u003e (few moving parts compared to a conventional piston engine). For these reasons, the Stirling engine is still used today in specific applications: \u003cstrong\u003esolar thermal generators\u003c\/strong\u003e, \u003cstrong\u003ecryogenics\u003c\/strong\u003e (reverse cycle), and the \u003cstrong\u003eSwedish Gotland submarines\u003c\/strong\u003e which use anaerobic Stirling propulsion for their exceptional acoustic discretion.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-des\"\u003e\n  \u003cdiv class=\"t\"\u003eTHE SPIRIT OF THE DIY KIT: UNDERSTANDING BY DOING\u003c\/div\u003e\n  \u003cdiv class=\"x\"\u003eThere are two ways to \u003cstrong\u003ediscover a Stirling engine\u003c\/strong\u003e. The first: buy an \u003cstrong\u003ealready assembled\u003c\/strong\u003e model, place it on a cup of hot water, and watch it spin. This is satisfying, but the mechanism remains mysterious—you observe the result without having grasped the logic of its operation. The second: \u003cstrong\u003eassemble each part yourself\u003c\/strong\u003e, understand the role of each component (cylinder, piston, connecting rod, flywheel, stand), solve the small technical challenges of assembly, and physically feel how thermal energy is transformed into mechanical motion. This second approach is \u003cstrong\u003einfinitely more enriching\u003c\/strong\u003e—it's the difference between \u003cstrong\u003ewatching a demonstration\u003c\/strong\u003e and \u003cstrong\u003ebecoming a mechanic yourself\u003c\/strong\u003e. For modeling enthusiasts, mechanics, or simply for those who like to \u003cstrong\u003eunderstand how things work\u003c\/strong\u003e through manual action, the DIY kit offers an experience that the assembled product can never replicate. Once finished, the engine becomes an \u003cstrong\u003eobject of personal pride\u003c\/strong\u003e to display—you can sincerely say: \u003cem\u003e\"I built it myself.\"\u003c\/em\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-steps\"\u003e\n  \u003ch4\u003eThe 4-phase assembly process\u003c\/h4\u003e\n  \u003cdiv class=\"aa-step\"\u003e\n\u003cdiv class=\"aa-step-n\"\u003e1\u003c\/div\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\u003cstrong\u003ePreparation and inventory\u003c\/strong\u003e — unpack and identify all supplied parts by following the list in the instructions. Prepare your tools (usually Phillips\/crosshead screwdrivers and hex keys, which are supplied). Work on a clean, flat surface, ideally with sufficient lighting.\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-step\"\u003e\n\u003cdiv class=\"aa-step-n\"\u003e2\u003c\/div\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\u003cstrong\u003eAssembly of the frame and base\u003c\/strong\u003e — first assemble the structural elements (metal base, supports, fasteners). This step lays the stable foundation on which the moving parts will be installed.\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-step\"\u003e\n\u003cdiv class=\"aa-step-n\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\u003cstrong\u003eMechanism installation\u003c\/strong\u003e — assemble the cylinder, piston, connecting rod, then the flywheel. This phase is the most delicate: adjustments must be precise for the parts to rotate freely without excessive friction. Take your time.\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-step\"\u003e\n\u003cdiv class=\"aa-step-n\"\u003e4\u003c\/div\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\u003cstrong\u003eTesting and commissioning\u003c\/strong\u003e — once assembly is complete, check that the flywheel turns freely by hand (smooth rotation without stiff points). Apply the recommended heat source according to the instructions, give the wheel a light push, and watch the engine settle into its autonomous rhythm.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-tip\"\u003e\n  \u003cp\u003e\u003cstrong\u003eAssembly tip:\u003c\/strong\u003e never force it. If a part doesn't fit, it's either \u003cstrong\u003emisoriented\u003c\/strong\u003e or the previous part isn't correctly positioned. Go back to the previous step before proceeding. For \u003cstrong\u003escrews and bolts\u003c\/strong\u003e, tighten gradually and alternately (like a car wheel) to avoid deformation. \u003cstrong\u003eLubricate\u003c\/strong\u003e only moving axles with a \u003cstrong\u003every small amount of dry graphite lubricant\u003c\/strong\u003e—never oil, which would clog the mechanism. Once assembled, the engine should exhibit \u003cstrong\u003efree rotation of the flywheel\u003c\/strong\u003e without noticeable friction by hand—this is the essential criterion for the quality of your assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-info\"\u003e\n  \u003cp\u003e\u003cstrong\u003eDifficulty level:\u003c\/strong\u003e this kit is intended for \u003cstrong\u003eteenagers and adults\u003c\/strong\u003e with some manual dexterity. Assembly typically takes \u003cstrong\u003e1 to 3 hours\u003c\/strong\u003e depending on your previous experience with technical modeling. No advanced skills are required—the provided instructions guide each step. For \u003cstrong\u003emodeling beginners\u003c\/strong\u003e, plan for quiet time and work without rushing. For \u003cstrong\u003eexperienced enthusiasts\u003c\/strong\u003e, the kit assembles easily and provides immediate satisfaction. This product is not suitable for children under 14 (small parts, precise adjustments required).\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-wrn\"\u003e\n  \u003cp\u003e\u003cstrong\u003eBefore first start-up:\u003c\/strong\u003e check that all axles turn freely, that all screws are properly tightened (but not excessively), and that nothing rubs abnormally. The engine will not start if the assembly has a major defect—this is also a \u003cstrong\u003equality control\u003c\/strong\u003e of your work.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eOperating precautions:\u003c\/strong\u003e depending on the heat source used (alcohol lamp, lighter, tea light candle), observe \u003cstrong\u003estandard safety guidelines\u003c\/strong\u003e for technical modeling: constant supervision during operation, keep away from flammable materials, and use a non-flammable surface under the engine. Keep out of reach of children during operation—the hot area can reach high temperatures.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eTechnical specifications\u003c\/h3\u003e\n\u003cdiv class=\"aa-sp\"\u003e\n  \u003ctable\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eDIY Stirling engine kit\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eArchitecture\u003c\/td\u003e\n\u003ctd\u003eHorizontal piston engine with flywheel\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDelivery format\u003c\/td\u003e\n\u003ctd\u003eDisassembled parts with assembly instructions\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAssembled dimensions\u003c\/td\u003e\n\u003ctd\u003eApproximately 22 × 8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMain material\u003c\/td\u003e\n\u003ctd\u003eMetal for mechanical parts\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFlywheel\u003c\/td\u003e\n\u003ctd\u003eVintage spoked style\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAssembly time\u003c\/td\u003e\n\u003ctd\u003e1 to 3 hours depending on experience\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDifficulty level\u003c\/td\u003e\n\u003ctd\u003eIntermediate (teenagers and adults)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eHeat source\u003c\/td\u003e\n\u003ctd\u003eAccording to instructions (alcohol lamp or tea light candle)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAudience\u003c\/td\u003e\n\u003ctd\u003eMechanical enthusiasts, modelers, engineering students\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eRecommended age\u003c\/td\u003e\n\u003ctd\u003e14 years and older\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-gift\"\u003e\n  \u003ch4\u003eThe ideal gift for mechanical enthusiasts\u003c\/h4\u003e\n  \u003cp\u003eThe \u003cstrong\u003ebuild-it-yourself Stirling engine kit\u003c\/strong\u003e is an \u003cstrong\u003eexceptional gift\u003c\/strong\u003e that combines \u003cstrong\u003eleisure activity\u003c\/strong\u003e (assembly) and a \u003cstrong\u003escientific decorative object\u003c\/strong\u003e (the finished product to display). It offers the recipient \u003cstrong\u003eseveral hours of engagement\u003c\/strong\u003e, making it a particularly \u003cstrong\u003erewarding\u003c\/strong\u003e gift compared to a simple, ready-made item. Ideal for \u003cstrong\u003emodeling enthusiasts\u003c\/strong\u003e, \u003cstrong\u003eengineers\u003c\/strong\u003e, \u003cstrong\u003escience-curious teenagers\u003c\/strong\u003e, \u003cstrong\u003ephysics teachers\u003c\/strong\u003e, \u003cstrong\u003ehorology mechanics enthusiasts\u003c\/strong\u003e, or miniature model fans. Perfect gift for \u003cstrong\u003eFather's Day\u003c\/strong\u003e, \u003cstrong\u003ebirthdays\u003c\/strong\u003e, \u003cstrong\u003eChristmas\u003c\/strong\u003e, or an \u003cstrong\u003eengineering graduation gift\u003c\/strong\u003e. For recipients who prefer to avoid assembly, we also offer \u003cstrong\u003epre-assembled\u003c\/strong\u003e Stirling engines in our collection.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv class=\"aa-faq\"\u003e\n  \u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eWhat is the difficulty level of assembly?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eThe kit is intended for \u003cstrong\u003eteenagers (14 and older) and adults\u003c\/strong\u003e with some manual dexterity. Assembly typically takes \u003cstrong\u003e1 to 3 hours\u003c\/strong\u003e depending on your experience with modeling. No advanced technical skills are required—the provided instructions guide each step. For beginners, allow plenty of time and work without rushing. For experienced enthusiasts, the kit assembles easily and offers immediate satisfaction.\u003c\/div\u003e\u003c\/details\u003e\n  \u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eWhat is a Stirling engine?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eThe Stirling engine is a \u003cstrong\u003eheat engine invented in 1816\u003c\/strong\u003e by Robert Stirling. Unlike modern internal combustion engines, it uses an \u003cstrong\u003eexternal heat source\u003c\/strong\u003e to alternately heat and cool a gas trapped in a cylinder—the cyclic expansion and contraction set in motion a piston connected to a flywheel. Silent, versatile, and reliable, it is still used today in certain applications (solar thermal generators, military submarines, cryogenics).\u003c\/div\u003e\u003c\/details\u003e\n  \u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eWhat heat source should I use?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eFollow the \u003cstrong\u003erecommendations in the instructions provided\u003c\/strong\u003e with the kit. Most model Stirling engines operate with an \u003cstrong\u003ealcohol lamp\u003c\/strong\u003e or a \u003cstrong\u003etea light candle\u003c\/strong\u003e placed under the heating chamber. Always observe standard safety guidelines: constant supervision, non-flammable surface, keep away from flammable materials. Never exceed the recommended temperature—excessive heat can damage components.\u003c\/div\u003e\u003c\/details\u003e\n  \u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eIs the kit complete or do I need to buy additional parts?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eThe kit contains \u003cstrong\u003eall the mechanical parts necessary\u003c\/strong\u003e for engine assembly. The tools required for assembly (screwdrivers, wrenches) are usually supplied or are very basic (available in any household toolbox). Depending on the model, the \u003cstrong\u003eheat source\u003c\/strong\u003e (alcohol lamp or tea light candle) may need to be purchased separately—check the exact contents in the instructions. No additional mechanical parts are required.\u003c\/div\u003e\u003c\/details\u003e\n  \u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eWhat should I do if the engine doesn't start after assembly?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eFirst, check that the \u003cstrong\u003eflywheel turns freely\u003c\/strong\u003e by hand, without noticeable friction. If not, identify the friction points and adjust the assembly. Check that \u003cstrong\u003eall screws are properly tightened\u003c\/strong\u003e but not excessively. Check the \u003cstrong\u003ecylinder's seal\u003c\/strong\u003e (a leaking gas will prevent the engine from operating). Lubricate the axles with a very small amount of \u003cstrong\u003edry graphite\u003c\/strong\u003e—never oil. If the problem persists, disassemble and reassemble the affected step, carefully following the instructions.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003c\/details\u003e\n  \u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eDoes the kit make a good gift?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eIt's an \u003cstrong\u003eexceptional gift\u003c\/strong\u003e that combines a leisure activity (several hours of assembly) and a scientific decorative object (the result to display). Particularly rewarding because it offers a \u003cstrong\u003ecomplete experience\u003c\/strong\u003e, not just an object. Ideal for model enthusiasts, engineers, teenagers curious about science, and physics teachers. Perfect for \u003cstrong\u003eFather's Day\u003c\/strong\u003e, \u003cstrong\u003ebirthdays\u003c\/strong\u003e, \u003cstrong\u003eChristmas\u003c\/strong\u003e, or an engineering \u003cstrong\u003egraduation gift\u003c\/strong\u003e. If the recipient prefers to avoid assembly, opt for an already assembled model.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"Quel est le niveau de difficulté du montage ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Kit pour adolescents 14 ans et plus et adultes ayant une aisance manuelle. Montage de 1 à 3 heures selon expérience du modélisme. Aucune compétence technique avancée requise, notice guide chaque étape. Débutants prévoir du temps tranquille.\"}},\n{\"@type\":\"Question\",\"name\":\"Qu'est-ce qu'un moteur Stirling ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Moteur thermique inventé en 1816 par Robert Stirling. Utilise une source de chaleur externe pour faire alterner chauffe et refroidissement d'un gaz emprisonné, mettant en mouvement un piston. Silencieux, polyvalent et fiable. Encore utilisé dans générateurs solaires, sous-marins, cryogénie.\"}},\n{\"@type\":\"Question\",\"name\":\"Quelle source de chaleur utiliser ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Suivez les recommandations de la notice. La plupart fonctionnent avec lampe à alcool ou bougie chauffe-plat sous la chambre de chauffe. Respectez les consignes de sécurité : surveillance constante, surface non inflammable, éloignement matières inflammables.\"}},\n{\"@type\":\"Question\",\"name\":\"Le kit est-il complet ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Kit complet avec toutes les pièces mécaniques nécessaires. Outils nécessaires généralement fournis ou très basiques. Selon les modèles, la source de chaleur peut être à acheter séparément - vérifiez la notice. Aucune pièce additionnelle requise.\"}},\n{\"@type\":\"Question\",\"name\":\"Que faire si le moteur ne démarre pas ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Vérifiez que le volant tourne librement à la main sans frottement. Vérifiez le serrage des vis sans excès. Vérifiez l'étanchéité du cylindre. Lubrifiez les axes avec graphite sec (jamais d'huile). Si persistant, démontez et remontez l'étape concernée.\"}},\n{\"@type\":\"Question\",\"name\":\"Le kit fait-il un bon cadeau ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Cadeau d'exception combinant activité de loisir (montage) et objet déco scientifique (résultat à exposer). Idéal pour passionnés de modélisme, ingénieurs, adolescents curieux de sciences, enseignants. Parfait pour fête des pères, anniversaire, Noël, cadeau de fin d'études.\"}}\n]}\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Atelier Atypique","offers":[{"title":"Default Title","offer_id":49423761342787,"sku":"1005005778664517-Default Title","price":79.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/moteur-stirling-a-monter-soi-meme.jpg?v=1771645247"},{"product_id":"toupie-inception-effet-gyroscopique-laccessoire-nolan","title":"Inception Spinning Top Gyro Effect – The Nolan Accessory","description":"\u003cstyle\u003e\n  .fp-body { font-family: sans-serif; color: #1a1a1a; line-height: 1.7; font-size: 15px; max-width: 760px; }\n  .fp-body p { margin: 0 0 1rem; }\n  .fp-body a { color: #185FA5; text-decoration: none; }\n\n  .fp-intro { font-size: 15px; color: #333; margin-bottom: 1.25rem; line-height: 1.7; }\n\n  .fp-benefits { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 8px; margin: 1.25rem 0; }\n  .fp-benefit { background: #f7f7f5; border-radius: 8px; padding: 0.75rem 1rem; display: flex; align-items: flex-start; gap: 10px; }\n  .fp-benefit .fb-icon { font-size: 18px; flex-shrink: 0; }\n  .fp-benefit .fb-text { font-size: 13px; line-height: 1.5; }\n  .fp-benefit .fb-title { font-weight: 500; margin-bottom: 2px; }\n  .fp-benefit .fb-desc { color: #666; }\n\n  .fp-cinema { background: #1a1a1a; border-radius: 12px; padding: 1.25rem 1.5rem; margin: 1.25rem 0; display: flex; align-items: flex-start; gap: 14px; }\n  .fp-cinema .fc-icon { font-size: 28px; flex-shrink: 0; }\n  .fp-cinema .fc-text { color: #fff; font-size: 13px; line-height: 1.6; }\n  .fp-cinema .fc-title { font-weight: 600; font-size: 14px; margin-bottom: 5px; color: #FAC775; }\n\n  .usages-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 8px; margin: 1.25rem 0; }\n  .usage-card { background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 0.75rem; text-align: center; }\n  .usage-card .uc-icon { font-size: 20px; margin-bottom: 0.3rem; display: block; }\n  .usage-card .uc-title { font-size: 12px; font-weight: 500; margin-bottom: 0.2rem; }\n  .usage-card .uc-desc { font-size: 11px; color: #888; line-height: 1.4; }\n\n  .fp-tip { background: #E1F5EE; border-left: 4px solid #1D9E75; border-radius: 0 8px 8px 0; padding: 1rem 1.25rem; margin: 1.25rem 0; }\n  .fp-tip p { margin: 0; color: #04342C; font-size: 13px; }\n  .fp-tip strong { color: #085041; }\n\n  .fp-specs { background: #f7f7f5; border-radius: 10px; padding: 1rem 1.25rem; margin: 1.25rem 0; }\n  .fp-specs table { width: 100%; border-collapse: collapse; font-size: 13px; }\n  .fp-specs td { padding: 6px 8px; border-bottom: 1px solid #e8e8e8; }\n  .fp-specs td:first-child { font-weight: 500; color: #555; width: 45%; }\n  .fp-specs tr:last-child td { border-bottom: none; }\n\n  .fp-gift { background: #fffdf7; border: 1px solid #FAC775; border-radius: 10px; padding: 1rem 1.25rem; margin: 1.25rem 0; font-size: 13px; color: #412402; }\n\n  .fp-faq { margin: 1.25rem 0; }\n  .fp-faq-item { border-bottom: 1px solid #eee; padding: 0.9rem 0; }\n  .fp-faq-item:last-child { border-bottom: none; }\n  .fp-faq-q { font-size: 14px; font-weight: 500; margin-bottom: 0.4rem; }\n  .fp-faq-a { font-size: 13px; color: #555; line-height: 1.6; }\n\n  @media (max-width: 480px) {\n    .fp-benefits { grid-template-columns: 1fr; }\n    .usages-grid { grid-template-columns: 1fr; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"fp-body\"\u003e\n\n  \u003cp class=\"fp-intro\"\u003eThe \u003cstrong\u003eInception gyroscopic spinning top\u003c\/strong\u003e is the cult object for fans of Christopher Nolan's film — the one that, in fiction, distinguishes dreams from reality. Made of high-quality metal, 2.8 × 3.2 cm, with a smooth and prolonged rotation thanks to its optimized weight distribution. A collector's item, a decorative desk piece, or a cinephile's gift — the spinning top that asks the question.\u003c\/p\u003e\n\n  \u003c!-- BÉNÉFICES --\u003e\n  \u003cdiv class=\"fp-benefits\"\u003e\n    \u003cdiv class=\"fp-benefit\"\u003e\n      \u003cspan class=\"fb-icon\"\u003e🌀\u003c\/span\u003e\n      \u003cdiv class=\"fb-text\"\u003e\n        \u003cdiv class=\"fb-title\"\u003eSmooth and prolonged rotation\u003c\/div\u003e\n        \u003cdiv class=\"fb-desc\"\u003eOptimized weight distribution for stable and hypnotizing rotation — will it stop?\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fp-benefit\"\u003e\n      \u003cspan class=\"fb-icon\"\u003e⚙️\u003c\/span\u003e\n      \u003cdiv class=\"fb-text\"\u003e\n        \u003cdiv class=\"fb-title\"\u003eHigh-quality metal\u003c\/div\u003e\n        \u003cdiv class=\"fb-desc\"\u003ePrecisely manufactured — perfect balance and exceptional durability for repeated use\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fp-benefit\"\u003e\n      \u003cspan class=\"fb-icon\"\u003e📐\u003c\/span\u003e\n      \u003cdiv class=\"fb-text\"\u003e\n        \u003cdiv class=\"fb-title\"\u003eCompact size — 2.8 × 3.2 cm\u003c\/div\u003e\n        \u003cdiv class=\"fb-desc\"\u003eFits in a pocket — always within reach on your desk or in your bag\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fp-benefit\"\u003e\n      \u003cspan class=\"fb-icon\"\u003e🎬\u003c\/span\u003e\n      \u003cdiv class=\"fb-text\"\u003e\n        \u003cdiv class=\"fb-title\"\u003eInception cult object\u003c\/div\u003e\n        \u003cdiv class=\"fb-desc\"\u003eInspired by the totem spinning top from Christopher Nolan's film — for collectors and film fans\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fp-benefit\"\u003e\n      \u003cspan class=\"fb-icon\"\u003e🧘\u003c\/span\u003e\n      \u003cdiv class=\"fb-text\"\u003e\n        \u003cdiv class=\"fb-title\"\u003eAnti-stress \u0026amp; relaxation\u003c\/div\u003e\n        \u003cdiv class=\"fb-desc\"\u003eThe soothing rotation captures attention and clears the mind — perfect for decompressing between meetings\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fp-benefit\"\u003e\n      \u003cspan class=\"fb-icon\"\u003e🎁\u003c\/span\u003e\n      \u003cdiv class=\"fb-text\"\u003e\n        \u003cdiv class=\"fb-title\"\u003eGift for movie fans\u003c\/div\u003e\n        \u003cdiv class=\"fb-desc\"\u003eThe object that every Inception fan immediately recognizes — original, compact, and memorable\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- CINÉMA --\u003e\n  \u003cdiv class=\"fp-cinema\"\u003e\n    \u003cdiv class=\"fc-icon\"\u003e🎬\u003c\/div\u003e\n    \u003cdiv class=\"fc-text\"\u003e\n      \u003cdiv class=\"fc-title\"\u003eThe Inception totem spinning top — the object that asks the question\u003c\/div\u003e\n      In Christopher Nolan's 2010 film, the spinning top is Cobb's totem — if it stops, it's reality. If it spins indefinitely, it's a dream. The final scene is one of the most discussed in cinema history. Owning this spinning top means carrying that open question with you.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- USAGES --\u003e\n  \u003ch3 style=\"font-size:15px; font-weight:500; margin:1.5rem 0 0.5rem;\"\u003e3 ways to use the Inception spinning top\u003c\/h3\u003e\n\n  \u003cdiv class=\"usages-grid\"\u003e\n    \u003cdiv class=\"usage-card\"\u003e\n      \u003cspan class=\"uc-icon\"\u003e🖥️\u003c\/span\u003e\n      \u003cdiv class=\"uc-title\"\u003eDesk object\u003c\/div\u003e\n      \u003cdiv class=\"uc-desc\"\u003eA decorative piece on your desk — an object that sparks conversations and reveals your cinematic tastes\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"usage-card\"\u003e\n      \u003cspan class=\"uc-icon\"\u003e🧘\u003c\/span\u003e\n      \u003cdiv class=\"uc-title\"\u003eStress relief\u003c\/div\u003e\n      \u003cdiv class=\"uc-desc\"\u003eA few seconds of hypnotizing rotation are enough to clear the mind — more effective than a fidget spinner\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"usage-card\"\u003e\n      \u003cspan class=\"uc-icon\"\u003e🏆\u003c\/span\u003e\n      \u003cdiv class=\"uc-title\"\u003eMovie collection\u003c\/div\u003e\n      \u003cdiv class=\"uc-desc\"\u003eA collector's item for Inception and Christopher Nolan fans — to display with other cult objects\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"fp-tip\"\u003e\n    \u003cp\u003e\u003cstrong\u003eHow to spin the top:\u003c\/strong\u003e place it on a flat, smooth surface, pinch the tip between your thumb and forefinger, and give it a quick spin with a sharp flick of the wrist. The smoother the surface (glass, marble, polished wood), the longer and smoother the spin will be. Avoid rough surfaces that hinder rotation.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SPECS --\u003e\n  \u003cdiv class=\"fp-specs\"\u003e\n    \u003ctable\u003e\n      \u003ctr\u003e\n\u003ctd\u003eName\u003c\/td\u003e\n\u003ctd\u003eInception gyroscopic spinning top\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-quality metal\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e2.8 × 3.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eEffect\u003c\/td\u003e\n\u003ctd\u003eGyroscopic — smooth and prolonged rotation\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eUse\u003c\/td\u003e\n\u003ctd\u003eDecoration · Collection · Stress relief\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eInspiration\u003c\/td\u003e\n\u003ctd\u003eTotem spinning top from the film Inception (Christopher Nolan, 2010)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- CADEAU --\u003e\n  \u003cdiv class=\"fp-gift\"\u003e\n    🎁 \u003cstrong\u003eThe ideal gift for a movie fan:\u003c\/strong\u003e compact, original, immediately recognizable by any Inception fan. Perfect for a \u003cstrong\u003ebirthday, Christmas, or simply to please\u003c\/strong\u003e someone who loves Christopher Nolan's cinema. A gift that always sparks a conversation about the final scene.\n  \u003c\/div\u003e\n\n  \u003c!-- FAQ --\u003e\n  \u003ch3 style=\"font-size:15px; font-weight:500; margin:1.5rem 0 0.5rem;\"\u003eFrequently asked questions\u003c\/h3\u003e\n\n  \u003cdiv class=\"fp-faq\"\u003e\n    \u003cdiv class=\"fp-faq-item\"\u003e\n      \u003cdiv class=\"fp-faq-q\"\u003eHow long does the spinning top spin?\u003c\/div\u003e\n      \u003cdiv class=\"fp-faq-a\"\u003eThe spin duration depends on the initial impulse force and the surface used. On a smooth surface (glass, marble), a good spin can last several minutes. High-quality metal and optimized weight distribution ensure a longer and more stable spin than a plastic or resin top.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fp-faq-item\"\u003e\n      \u003cdiv class=\"fp-faq-q\"\u003eIs the spinning top faithful to the one in the film Inception?\u003c\/div\u003e\n      \u003cdiv class=\"fp-faq-a\"\u003eIt is inspired by Cobb's totem spinning top in Christopher Nolan's Inception film (2010) — with the same characteristic curves and recognizable silhouette. It is a collector's item inspired by the film, not an officially licensed reproduction.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fp-faq-item\"\u003e\n      \u003cdiv class=\"fp-faq-q\"\u003eOn what surface should the spinning top be spun?\u003c\/div\u003e\n      \u003cdiv class=\"fp-faq-a\"\u003eThe best surfaces are smooth and flat surfaces — glass, marble, polished wood, metal. Avoid rough surfaces (fabric, paper, raw wood) that create too much friction and reduce spin duration. A glass table or a lacquered desk yield the best results.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fp-faq-item\"\u003e\n      \u003cdiv class=\"fp-faq-q\"\u003eIs the spinning top suitable as a gift for someone who hasn't seen Inception?\u003c\/div\u003e\n      \u003cdiv class=\"fp-faq-a\"\u003eYes — even without knowing the film, the metal gyroscopic spinning top is a fascinating object for its hypnotizing rotation and decorative aspect. It works very well as a stress-relief object or a desk piece. The reference to the film is a bonus for cinephiles, not a prerequisite for appreciating the object.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fp-faq-item\"\u003e\n      \u003cdiv class=\"fp-faq-q\"\u003eDoes it stop or spin indefinitely?\u003c\/div\u003e\n      \u003cdiv class=\"fp-faq-a\"\u003eIt stops — that's reality. But if you watch the final scene of Inception, you'll notice that Nolan never shows whether the spinning top falls or not. This spinning top allows you to ask the same question with each spin.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How long does the Inception gyroscopic spinning top spin?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Several minutes on a smooth surface (glass, marble) depending on the impulse force. High-quality metal ensures a longer spin than plastic or resin.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the spinning top faithful to the one in the film Inception?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Inspired by Cobb's totem spinning top in Inception (Christopher Nolan, 2010) — same characteristic curves. A collector's item inspired by the film, not an officially licensed reproduction.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"On what surface should the Inception spinning top be spun?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Smooth and flat surfaces: glass, marble, polished wood, metal. Avoid fabric, paper, and raw wood which hinder rotation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the spinning top suitable as a gift for someone who hasn't seen Inception?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes — a fascinating object for its hypnotizing rotation and decorative aspect, regardless of the film. The movie reference is a bonus for cinephiles, not a prerequisite.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the Inception spinning top stop or spin indefinitely?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"It stops — that's reality. But as in the film's final scene, it lets you ask the question with each spin.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Atelier Atypique","offers":[{"title":"Default Title","offer_id":49424008806723,"sku":"1005006793618332-Silver","price":19.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/S8d410d550e3f4d4da4b6fcd4f02614bas.webp?v=1771645313"},{"product_id":"pendule-de-newton-baton-sculpture-scientifique-et-fascinante","title":"Newton's Cradle Stick – Scientific and Fascinating Sculpture","description":"\u003cmeta charset=\"UTF-8\"\u003e\u003cstyle\u003e\n.fp-body{font-family:sans-serif;color:#1a1a1a;line-height:1.7;font-size:15px;max-width:760px}\n.fp-body p{margin:0 0 1rem}.fp-body a{color:#185FA5;text-decoration:none}\n.fp-intro{font-size:15px;color:#333;margin-bottom:1.25rem;line-height:1.7}\n.fp-benefits{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:1.25rem 0}\n.fp-benefit{background:#f7f7f5;border-radius:8px;padding:.75rem 1rem;display:flex;align-items:flex-start;gap:10px}\n.fp-benefit .fb-icon{font-size:18px;flex-shrink:0}.fp-benefit .fb-text{font-size:13px;line-height:1.5}\n.fp-benefit .fb-title{font-weight:500;margin-bottom:2px}.fp-benefit .fb-desc{color:#666}\n.fp-design{background:#1a1a1a;border-radius:12px;padding:1.25rem 1.5rem;margin:1.25rem 0;display:flex;align-items:flex-start;gap:14px}\n.fp-design .fd-icon{font-size:28px;flex-shrink:0}.fp-design .fd-text{color:#fff;font-size:13px;line-height:1.6}\n.fp-design .fd-title{font-weight:600;font-size:14px;margin-bottom:5px;color:#FAC775}\n.fp-tip{background:#E1F5EE;border-left:4px solid #1D9E75;border-radius:0 8px 8px 0;padding:1rem 1.25rem;margin:1.25rem 0}\n.fp-tip p{margin:0;color:#04342C;font-size:13px}.fp-tip strong{color:#085041}\n.fp-warn{background:#FAECE7;border-left:4px solid #D85A30;border-radius:0 8px 8px 0;padding:1rem 1.25rem;margin:1.25rem 0}\n.fp-warn p{margin:0;color:#5C1A00;font-size:13px}\n.fp-specs{background:#f7f7f5;border-radius:10px;padding:1rem 1.25rem;margin:1.25rem 0;overflow-x:auto}\n.fp-specs table{width:100%;border-collapse:collapse;font-size:13px}\n.fp-specs td{padding:6px 8px;border-bottom:1px solid #e8e8e8}\n.fp-specs td:first-child{font-weight:500;color:#555;width:45%}\n.fp-specs tr:last-child td{border-bottom:none}\n.fp-gift{background:#fffdf7;border:1px solid #FAC775;border-radius:10px;padding:1rem 1.25rem;margin:1.25rem 0;font-size:13px;color:#412402}\n.fp-faq{margin:1.25rem 0}.fp-faq-item{border-bottom:1px solid #eee;padding:.9rem 0}\n.fp-faq-item:last-child{border-bottom:none}.fp-faq-q{font-size:14px;font-weight:500;margin-bottom:.4rem}\n.fp-faq-a{font-size:13px;color:#555;line-height:1.6}\n@media(max-width:480px){.fp-benefits{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\u003cdiv class=\"fp-body\"\u003e\n\u003cp class=\"fp-intro\"\u003eThe \u003cstrong\u003eNewton Stick Pendulum\u003c\/strong\u003e — Newton's cradle revisited with \u003cstrong\u003e2 rotating sticks\u003c\/strong\u003e suspended in perfect balance. Materials: \u003cstrong\u003eaviation aluminum + ABS\u003c\/strong\u003e. Dimensions: \u003cstrong\u003e40 × 26 × 9 cm\u003c\/strong\u003e. Continuous and silent movement. Battery-powered (not included). Elegant silver finish — a modern science and art decor object.\u003c\/p\u003e\n\n\u003cdiv class=\"fp-benefits\"\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e⚖️\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003e2 sticks in harmonious movement\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eThe two rotating sticks move in perfect harmony according to the principles of classical mechanics — a soothing and continuous visual spectacle.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e✈️\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eAviation aluminum + ABS\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eAviation aluminum for a light weight and unrivaled robustness, ABS plastic for a smooth, shock-resistant finish — contemporary quality materials.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🔇\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eSilent and continuous movement\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eSilent and continuous animation — perfect for a work environment, living room, or waiting room without disturbing the atmosphere.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🔋\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eBattery-powered\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eSimple installation without wiring — can be placed anywhere. Batteries not included, to be purchased separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e📐\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003e40 × 26 × 9 cm\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eCompact and elegant format that fits into any type of interior — office, living room, waiting room, or library.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-benefit\"\u003e\n\u003cspan class=\"fb-icon\"\u003e🎁\u003c\/span\u003e\u003cdiv class=\"fb-text\"\u003e\n\u003cdiv class=\"fb-title\"\u003eScience \u0026amp; design gift\u003c\/div\u003e\n\u003cdiv class=\"fb-desc\"\u003eFor enthusiasts of science, modern art, and minimalist decor — a curious object that never fails to attract attention.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-design\"\u003e\n\u003cdiv class=\"fd-icon\"\u003e⚖️\u003c\/div\u003e\n\u003cdiv class=\"fd-text\"\u003e\n\u003cdiv class=\"fd-title\"\u003eNewton Stick — aviation aluminum + ABS · 40 × 26 × 9 cm · 2 sticks · batteries · silver finish\u003c\/div\u003e\nThe classic Newton's pendulum transmits energy from ball to ball. This one reinvents the concept with two suspended rotating sticks that move in continuous harmony — a fluid, silent, and almost hypnotic movement. Aviation aluminum gives it the lightness of aeronautics and the solidity of industry. The silver finish gives it the elegance of a premium office object. Turn it on and let it set the atmosphere for you.\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-specs\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterials\u003c\/td\u003e\n\u003ctd\u003eAviation Aluminum + ABS Plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e40 × 26 × 9 cm (L × H × D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSticks\u003c\/td\u003e\n\u003ctd\u003e2 — rotating, suspended in balance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMovement\u003c\/td\u003e\n\u003ctd\u003eSilent and continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eSilver — modern design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003eBatteries (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eOffice · living room · waiting room · decoration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-warn\"\u003e\n\u003cp\u003e\u003cstrong\u003eBatteries not included:\u003c\/strong\u003e please provide your own batteries when purchasing. Installation is simple and requires no wiring — the pendulum can be placed anywhere without the constraint of an electrical outlet.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-tip\"\u003e\n\u003cp\u003e\u003cstrong\u003eFor optimal effect:\u003c\/strong\u003e place the pendulum on a flat and stable surface, away from strong drafts that could disturb the movement of the sticks. The silent animation works equally well day and night — ideal in an open office or meeting room to create a zen atmosphere.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fp-gift\"\u003e\n🎁 \u003cstrong\u003eThe gift for curious minds and modern decorators:\u003c\/strong\u003e aviation aluminum + ABS, 40 × 26 × 9 cm, 2 sticks, silver finish. A \u003cstrong\u003eunique object\u003c\/strong\u003e for a \u003cstrong\u003ebirthday, Christmas, colleague gift, or office gift\u003c\/strong\u003e — for any enthusiast of physics, modern art, and minimalist design.\n\u003c\/div\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:500;margin:1.5rem 0 0.5rem;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cdiv class=\"fp-faq\"\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eWhat is the difference from a classic ball Newton's pendulum?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eThe classic Newton's pendulum transmits energy by impact between metal balls. The Stick Pendulum reinvents this concept with two rotating sticks that move in continuous harmony — a more fluid, quieter movement, more focused on visual and decorative effect than on demonstrating energy transfer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eWhat type of batteries are needed?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eThe exact type of batteries depends on the model — check the instructions provided with the product. Batteries are not included in the delivery. Installation is simple and requires no tools.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eIs the movement really silent?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eYes — the movement of the sticks is designed to be silent and free from disruptive vibrations. It is suitable for a work environment, a waiting room, or a living room without disturbing the atmosphere. This is one of its main advantages compared to classic mechanical desk objects.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-item\"\u003e\n\u003cdiv class=\"fp-faq-q\"\u003eHow long do the batteries last?\u003c\/div\u003e\n\u003cdiv class=\"fp-faq-a\"\u003eBattery life depends on the type used and the daily usage time. For office use (8h\/day), standard alkaline batteries offer several weeks to several months of autonomy. An ON\/OFF switch allows it to be turned off when not in use to preserve battery life.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"Différence avec pendule Newton classique à billes ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Bâtons rotatifs en mouvement continu et harmonieux vs choc de billes. Plus fluide, plus silencieux, davantage décoratif.\"}},\n{\"@type\":\"Question\",\"name\":\"Quelles piles sont nécessaires ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Vérifiez la notice fournie. Piles non incluses à l'achat. Installation simple sans outil.\"}},\n{\"@type\":\"Question\",\"name\":\"Mouvement vraiment silencieux ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oui — conçu pour un bureau, salle d'attente ou salon sans perturber l'atmosphère.\"}},\n{\"@type\":\"Question\",\"name\":\"Durée des piles ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Plusieurs semaines à mois selon usage. Interrupteur ON\/OFF pour préserver les piles quand inutilisé.\"}}\n]}\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Atelier Atypique","offers":[{"title":"Default Title","offer_id":49424042230083,"sku":"1005007549906141-T-M","price":139.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/balance-de-newton-6.jpg?v=1771645330"},{"product_id":"moteur-stirling-bas-temperature-kit-diy-aldabert","title":"Low-Temperature Stirling Engine - ALDABERT DIY Kit","description":"\u003cstyle\u003e\n.aa-body{font-family:Georgia,serif;color:#1A1A1A;line-height:1.7;font-size:15px;max-width:760px;margin:0 auto;padding:1rem;background:#FAFAF7}\n.aa-body p{margin:0 0 1rem}\n.aa-intro{font-size:15px;margin-bottom:1.25rem}\n.aa-title{font-size:16px;font-weight:600;margin:1.75rem 0 .5rem;border-bottom:2px solid #FAC775;padding-bottom:4px;display:inline-block;letter-spacing:0.3px}\n.aa-sub{font-size:13px;color:#888;margin:0 0 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summary::after{content:\"−\"}\n.aa-a{font-size:13px;color:#3a3a3a;line-height:1.7;margin-top:.5rem}\n.aa-a strong{color:#1A1A1A}\n@media(max-width:480px){.aa-ben,.aa-inclus-grid{grid-template-columns:1fr!important}}\n\u003c\/style\u003e\n\n\u003cdiv class=\"aa-body\"\u003e\n\n\u003cp class=\"aa-intro\"\u003eThe \u003cstrong\u003eALDABERT-001 low-temperature Stirling engine\u003c\/strong\u003e is one of the most \u003cstrong\u003efascinating scientific demonstration objects to observe\u003c\/strong\u003e. Designed to operate with a \u003cstrong\u003esimple cup of hot water\u003c\/strong\u003e without any flame or combustion, it transforms a temperature difference as low as \u003cstrong\u003e25 °C\u003c\/strong\u003e into a self-sustaining rotational movement of the \u003cstrong\u003egolden wheel\u003c\/strong\u003e, up to \u003cstrong\u003e180 revolutions per minute\u003c\/strong\u003e. A true \u003cstrong\u003econdensation of applied thermodynamics\u003c\/strong\u003e displayed on a desk or shelf. Body made of \u003cstrong\u003estainless steel\u003c\/strong\u003e and \u003cstrong\u003epainted carbon steel\u003c\/strong\u003e, \u003cstrong\u003efrosted glass piston\u003c\/strong\u003e resistant to leaks and wear, compact size \u003cstrong\u003e12.2 × 10.2 × 10.2 cm\u003c\/strong\u003e for 250 g. Ideal for \u003cstrong\u003emechanics enthusiasts\u003c\/strong\u003e, \u003cstrong\u003ephysics teachers\u003c\/strong\u003e, \u003cstrong\u003eengineering students\u003c\/strong\u003e, \u003cstrong\u003ecollectors of scientific objects\u003c\/strong\u003e, or any lover of elegant objects that demonstrate fundamental physical principles. User manual included. \u003cspan class=\"aa-science-badge\"\u003eScientific Demonstration\u003c\/span\u003e \u003cspan class=\"aa-thermo-badge\"\u003eThermodynamics\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch3 class=\"aa-title\"\u003eALDABERT-001 Stirling engine advantages\u003c\/h3\u003e\n\u003cdiv class=\"aa-ben\"\u003e\n  \u003cdiv class=\"aa-b\"\u003e\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\u003cdiv class=\"tx\"\u003e\n\u003cdiv class=\"tt\"\u003eHot water cup is enough\u003c\/div\u003e\n\u003cdiv class=\"ds\"\u003eNo flame or alcohol lamp needed — safe and accessible.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-b\"\u003e\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\u003cdiv class=\"tx\"\u003e\n\u003cdiv class=\"tt\"\u003e25 °C difference is sufficient\u003c\/div\u003e\n\u003cdiv class=\"ds\"\u003eOne of the most sensitive low-temperature Stirling engines.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-b\"\u003e\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\u003cdiv class=\"tx\"\u003e\n\u003cdiv class=\"tt\"\u003eSelf-powered up to 180 rpm\u003c\/div\u003e\n\u003cdiv class=\"ds\"\u003eStart the wheel, and the engine takes over autonomously.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-b\"\u003e\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\u003cdiv class=\"tx\"\u003e\n\u003cdiv class=\"tt\"\u003eFrosted glass piston\u003c\/div\u003e\n\u003cdiv class=\"ds\"\u003eQuality design, reduces steam leaks and wear.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-b\"\u003e\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\u003cdiv class=\"tx\"\u003e\n\u003cdiv class=\"tt\"\u003eCompact 250 g format\u003c\/div\u003e\n\u003cdiv class=\"ds\"\u003e12.2 × 10.2 cm — can be displayed on a desk or shelf.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-b\"\u003e\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\u003cdiv class=\"tx\"\u003e\n\u003cdiv class=\"tt\"\u003eElegant educational object\u003c\/div\u003e\n\u003cdiv class=\"ds\"\u003eGolden wheel + stainless steel + glass — accomplished scientific aesthetic.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-mat\"\u003e\n  \u003ch4\u003eHow does a Stirling engine work?\u003c\/h4\u003e\n  \u003cp\u003eThe \u003cstrong\u003eStirling engine\u003c\/strong\u003e is a heat engine invented in \u003cstrong\u003e1816 by the Scottish pastor Robert Stirling\u003c\/strong\u003e, which exploits the \u003cstrong\u003eexpansion and contraction of a gas\u003c\/strong\u003e under the effect of a temperature difference. Unlike internal combustion engines (gasoline, diesel), it requires \u003cstrong\u003eno explosion\u003c\/strong\u003e or internal combustion — the heat source can be entirely external and of any nature: flame, sun, friction, human heat, and in the case of the low-temperature model, a simple \u003cstrong\u003ecup of hot water\u003c\/strong\u003e.\u003c\/p\u003e\n  \u003cp\u003eThe principle is elegant: when the air trapped in the cylinder comes into contact with the \u003cstrong\u003ehot base\u003c\/strong\u003e, it \u003cstrong\u003eexpands\u003c\/strong\u003e and pushes the piston; when it is then moved to the \u003cstrong\u003ecold\u003c\/strong\u003e zone (top of the cylinder exposed to ambient air), it \u003cstrong\u003econtracts\u003c\/strong\u003e and pulls the piston in the opposite direction. This cycle repeats as long as the thermal difference is maintained, creating a continuous and autonomous rotational movement — fascinating to observe and particularly \u003cstrong\u003eeducational\u003c\/strong\u003e.\u003c\/p\u003e\n  \u003cp\u003eThe ALDABERT-001 is a \u003cstrong\u003e\"low-temperature\"\u003c\/strong\u003e model: while most commercial Stirling engines require a flame or an intense heat source, this model is calibrated to start with only a \u003cstrong\u003e25 °C difference\u003c\/strong\u003e between the base and ambient air — which makes it \u003cstrong\u003esafe\u003c\/strong\u003e, accessible to accompanied children, and usable daily without special equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-des\"\u003e\n  \u003cdiv class=\"t\"\u003eTHE ALDABERT SPIRIT: THE BEAUTY OF THERMODYNAMICS\u003c\/div\u003e\n  \u003cdiv class=\"x\"\u003eFew objects \u003cstrong\u003eembody the fundamental principles of physics as elegantly\u003c\/strong\u003e as the Stirling engine. Placed on a cup, it becomes a \u003cstrong\u003eliving demonstration\u003c\/strong\u003e of the second law of thermodynamics: any temperature difference can produce mechanical work. This \u003cstrong\u003econceptual simplicity\u003c\/strong\u003e combined with the \u003cstrong\u003ecomplexity of observation\u003c\/strong\u003e (gears animating, piston oscillating, wheel gradually accelerating) makes the Stirling one of the \u003cstrong\u003emost powerful educational objects\u003c\/strong\u003e ever designed. Beyond its demonstrative function, the ALDABERT is also a \u003cstrong\u003ebeautiful object\u003c\/strong\u003e in its own right — polished stainless steel, golden accents, transparent glass revealing the mechanism. It looks equally impressive on an engineer's desk as it does in a clockwork enthusiast's library, a teacher's lab, or a medical practice's waiting room. An object that \u003cstrong\u003eprovokes conversation\u003c\/strong\u003e and reveals something profound about the physical world around us.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-inclus\"\u003e\n  \u003ch4\u003e📦 Package Contents\u003c\/h4\u003e\n  \u003cdiv class=\"aa-inclus-grid\"\u003e\n    \u003cdiv class=\"aa-inclus-item\"\u003e\n      \u003cdiv class=\"ii-name\"\u003e⚙ ALDABERT-001 Stirling Engine\u003c\/div\u003e\n      \u003cdiv class=\"ii-desc\"\u003eAssembled, ready to use\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"aa-inclus-item\"\u003e\n      \u003cdiv class=\"ii-name\"\u003e📖 User Manual\u003c\/div\u003e\n      \u003cdiv class=\"ii-desc\"\u003eComplete instructions in English\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-steps\"\u003e\n  \u003ch4\u003eStarting the engine in 4 steps\u003c\/h4\u003e\n  \u003cdiv class=\"aa-step\"\u003e\n\u003cdiv class=\"aa-step-n\"\u003e1\u003c\/div\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\u003cstrong\u003ePrepare the hot source\u003c\/strong\u003e — fill a cup with very hot water (ideally 80-90 °C, just after boiling). The higher the temperature, the faster and longer the engine will run.\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-step\"\u003e\n\u003cdiv class=\"aa-step-n\"\u003e2\u003c\/div\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\u003cstrong\u003ePlace the engine\u003c\/strong\u003e — place the base of the Stirling engine directly on the upper rim of the cup, ensuring the base is in good contact with the steam's heat. Wait 10-15 seconds for the base to heat up.\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-step\"\u003e\n\u003cdiv class=\"aa-step-n\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\u003cstrong\u003eStart the wheel\u003c\/strong\u003e — give the golden wheel a light flick with your finger in a clockwise direction. The engine will take over in a few seconds and gradually accelerate to its cruising speed.\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"aa-step\"\u003e\n\u003cdiv class=\"aa-step-n\"\u003e4\u003c\/div\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\u003cstrong\u003eObserve\u003c\/strong\u003e — the engine runs autonomously as long as the temperature difference (minimum 25 °C) is maintained. Depending on the water temperature and ambient temperature, expect 15 to 30 minutes of operation with a cup of boiling water.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-tip\"\u003e\n  \u003cp\u003e\u003cstrong\u003eFor best performance:\u003c\/strong\u003e use a very hot cup of water (80-90 °C) just after boiling. Start the wheel in a \u003cstrong\u003eclockwise direction\u003c\/strong\u003e — this is the nominal operating direction. If the movement becomes irregular after several uses, apply a \u003cstrong\u003every small amount of dry graphite lubricant\u003c\/strong\u003e to the glass piston. You can also place the engine on other heat sources: \u003cstrong\u003ehot water bottle\u003c\/strong\u003e, \u003cstrong\u003eradiator\u003c\/strong\u003e, \u003cstrong\u003eslightly heated surface\u003c\/strong\u003e. Anecdote: in cold weather (ambient temperature below 12 °C), you can even run it with the \u003cstrong\u003eheat of your hand\u003c\/strong\u003e (37 °C) — the 25 °C difference is naturally achieved!\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-info\"\u003e\n  \u003cp\u003e\u003cstrong\u003eMaintenance:\u003c\/strong\u003e The engine does not require regular maintenance. Wipe the body with a soft, dry cloth to preserve the shine of the stainless steel and the finish of the golden wheel. Avoid prolonged contact with moisture. In case of friction or slowing, apply \u003cstrong\u003eonly dry graphite lubricant\u003c\/strong\u003e (available at model shops) to the glass piston. Store away from dust between uses.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-wrn\"\u003e\n  \u003cp\u003e\u003cstrong\u003eUsage precautions:\u003c\/strong\u003e Never use \u003cstrong\u003emineral or vegetable oil\u003c\/strong\u003e as a lubricant — oil would clog the mechanism and irreversibly reduce performance. Use exclusively \u003cstrong\u003edry graphite lubricant\u003c\/strong\u003e. The engine is not a toy for young children — it contains moving mechanical parts and comes into contact with a hot source. Adult supervision is recommended for educational use with children. Keep out of reach of very young children.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eTechnical specifications\u003c\/h3\u003e\n\u003cdiv class=\"aa-sp\"\u003e\n  \u003ctable\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eALDABERT-001\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eLow-temperature Stirling engine\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMaterials\u003c\/td\u003e\n\u003ctd\u003eStainless steel + painted carbon steel + glass\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePiston\u003c\/td\u003e\n\u003ctd\u003eFrosted glass, anti-leak and anti-wear\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWheel\u003c\/td\u003e\n\u003ctd\u003eGolden (gold finish)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12.2 × 10.2 × 10.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e250 g\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMaximum speed\u003c\/td\u003e\n\u003ctd\u003e180 rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMinimum temperature difference\u003c\/td\u003e\n\u003ctd\u003e25 °C (base vs ambient air)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eHeat source\u003c\/td\u003e\n\u003ctd\u003eCup of hot water, hot water bottle, radiator (no flame required)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eRecommended lubricant\u003c\/td\u003e\n\u003ctd\u003eDry graphite only (never oil)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eManual\u003c\/td\u003e\n\u003ctd\u003eIncluded, in English\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-gift\"\u003e\n  \u003ch4\u003eThe ultimate thermodynamic gift\u003c\/h4\u003e\n  \u003cp\u003eThe \u003cstrong\u003eALDABERT-001 Stirling engine\u003c\/strong\u003e is an \u003cstrong\u003eoriginal and memorable gift\u003c\/strong\u003e that stands out from the crowd. It combines aesthetic elegance (stainless steel, glass, golden wheel), \u003cstrong\u003eeducational dimension\u003c\/strong\u003e (a living demonstration of thermodynamic principles), and an \u003cstrong\u003einteractive character\u003c\/strong\u003e (the object actually works and fascinates with every use). Ideal for a science enthusiast's \u003cstrong\u003ebirthday\u003c\/strong\u003e, \u003cstrong\u003eFather's Day\u003c\/strong\u003e, \u003cstrong\u003eChristmas\u003c\/strong\u003e, a \u003cstrong\u003eteacher's gift\u003c\/strong\u003e in physics or engineering, a \u003cstrong\u003ethank-you gift\u003c\/strong\u003e for a professor, a \u003cstrong\u003eprofessional promotion gift\u003c\/strong\u003e for an engineer, or a \u003cstrong\u003eretirement gift\u003c\/strong\u003e. Particularly suitable for \u003cstrong\u003eteachers\u003c\/strong\u003e, \u003cstrong\u003eengineering students\u003c\/strong\u003e, \u003cstrong\u003eengineers\u003c\/strong\u003e, \u003cstrong\u003ecollectors of scientific objects\u003c\/strong\u003e, \u003cstrong\u003eclockwork mechanics enthusiasts\u003c\/strong\u003e, or simply people \u003cstrong\u003ecurious about how the world works\u003c\/strong\u003e. A gift like no other.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv class=\"aa-faq\"\u003e\n  \u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eWhy is this engine called \"low-temperature\"?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eMost commercial Stirling engines require a \u003cstrong\u003eflame\u003c\/strong\u003e or an intense heat source (alcohol lamp, candle). The \u003cstrong\u003eALDABERT-001\u003c\/strong\u003e model is designed to operate with only a \u003cstrong\u003e25 °C difference\u003c\/strong\u003e between the hot base and ambient air — a simple cup of hot water is enough. This makes it \u003cstrong\u003esafe\u003c\/strong\u003e, accessible for use with accompanied children, and usable daily without special equipment.\u003c\/div\u003e\u003c\/details\u003e\n  \u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eHow do I start the Stirling engine?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003ePlace the engine on a cup of \u003cstrong\u003ehot water\u003c\/strong\u003e (ideally 80-90 °C). Wait 10-15 seconds for the base to heat up, then give the golden wheel a \u003cstrong\u003elight flick with your finger\u003c\/strong\u003e in a clockwise direction. The engine will take over and run autonomously as long as the temperature difference is maintained (usually 15 to 30 minutes with a cup of boiling water).\u003c\/div\u003e\u003c\/details\u003e\n  \u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eWhat if the engine runs slowly or stops?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eFirst, check that the \u003cstrong\u003etemperature difference is sufficient\u003c\/strong\u003e (minimum 25 °C) — use a hotter cup or replace the water if it has cooled. If the movement remains irregular despite good heat, apply a \u003cstrong\u003every small amount of dry graphite lubricant\u003c\/strong\u003e to the glass piston. \u003cstrong\u003eNever use oil\u003c\/strong\u003e — mineral or vegetable — as it would clog the mechanism and irreversibly reduce performance.\u003c\/div\u003e\u003c\/details\u003e\n  \u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eCan it be used with other heat sources?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eYes — \u003cstrong\u003eany flat surface\u003c\/strong\u003e providing a 25 °C difference works: \u003cstrong\u003ehot water cup\u003c\/strong\u003e, \u003cstrong\u003eradiator\u003c\/strong\u003e, \u003cstrong\u003ehot water bottle\u003c\/strong\u003e, \u003cstrong\u003eslightly heated surface\u003c\/strong\u003e (without direct flame). You can even place it in the \u003cstrong\u003epalm of your hand\u003c\/strong\u003e (human body 37 °C) if the ambient temperature is below 12 °C — the difference is then enough to make it run. This is a spectacular demonstration of the engine's sensitivity.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003c\/details\u003e\n  \u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eIs the engine suitable for educational use in the classroom?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eAbsolutely — it's even one of its primary uses. The Stirling engine is the \u003cstrong\u003eideal teaching tool\u003c\/strong\u003e for illustrating the principles of thermodynamics in the classroom (middle school, high school, university), thanks to its safety (no flame), its reliable startup, and its \u003cstrong\u003espectacular yet quiet\u003c\/strong\u003e operation. Several physics teachers use this type of engine as a teaching aid for the second law of thermodynamics or the Carnot cycle. Adult supervision is recommended for younger students.\u003c\/div\u003e\u003c\/details\u003e\n  \u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eDoes the engine make a good gift?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eIt's an \u003cstrong\u003eoriginal and memorable gift\u003c\/strong\u003e that combines aesthetic elegance, educational value, and interactive character. Ideal for the \u003cstrong\u003ebirthday\u003c\/strong\u003e of a science enthusiast, \u003cstrong\u003eFather's Day\u003c\/strong\u003e, \u003cstrong\u003eChristmas\u003c\/strong\u003e, a \u003cstrong\u003eteacher's gift\u003c\/strong\u003e, a \u003cstrong\u003eprofessional promotion gift\u003c\/strong\u003e, or a \u003cstrong\u003eretirement gift\u003c\/strong\u003e. Particularly appreciated by teachers, engineering students, engineers, collectors of scientific objects, mechanics enthusiasts, or simply people curious about how the world works.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"Why is this engine called low temperature?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It operates with only a 25°C difference between the hot base and the ambient air. A simple cup of hot water is enough; no flame is required. Safe and accessible for use with accompanied children.\"}},\n{\"@type\":\"Question\",\"name\":\"How to start the ALDABERT-001 Stirling engine?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Place it on a cup of hot water (80-90°C), wait 10-15 seconds, then give the golden wheel a light clockwise flick with your finger. It runs autonomously as long as the thermal difference is maintained (15-30 minutes).\"}},\n{\"@type\":\"Question\",\"name\":\"What to do if the engine runs slowly?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Check the temperature difference (min 25°C), use a hotter cup. If it's irregular despite good heat, apply dry graphite lubricant to the piston. Never use oil, which would clog the mechanism.\"}},\n{\"@type\":\"Question\",\"name\":\"What other heat sources can be used?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Any source providing a 25°C difference: cup, radiator, hot water bottle, heated surface. Even the palm of the hand (37°C) if the ambient temperature is below 12°C - a spectacular demonstration of the engine's sensitivity.\"}},\n{\"@type\":\"Question\",\"name\":\"Is the engine suitable for educational use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Absolutely, it is a preferred use. An ideal educational object to illustrate thermodynamics in class (middle school, high school, university), thanks to its flameless safety, reliability, and spectacular operation.\"}},\n{\"@type\":\"Question\",\"name\":\"Does the engine make a good gift?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"An original gift combining aesthetic elegance, educational dimension, and interactive character. Ideal for a science enthusiast's birthday, Father's Day, Christmas, a teacher's gift, professional promotion, or retirement.\"}}\n]}\n\u003c\/script\u003e\n\n\u003c\/div\u003e","brand":"Atelier Atypique","offers":[{"title":"Default Title","offer_id":49424117694787,"sku":"4000717393779-style 1-CHINA","price":69.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/moteur-stirling-basse-temperature.jpg?v=1771645370"},{"product_id":"vision-rotation-visual-levitation-desktop-top-office-desk-toy-stress-reliever-decompression-ornament-holiday-gift","title":"Zinc alloy visual levitation desk spinner - AXIOME","description":"\u003cstyle\u003e\n.aa{font-family:Georgia,'Times New Roman',serif;color:#1A1A1A;line-height:1.7;font-size:15px;max-width:760px;margin:0 auto}\n.aa p{margin:0 0 1rem}\n.aa a{color:#185FA5;text-decoration:underline}\n.aa .aa-title{display:inline-block;border-bottom:2px solid 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h3{color:#5C3A1E;font-size:16px;margin:0 0 .6rem}\n.aa .aa-gift p{font-size:14px}\n.aa .aa-faq{margin:1rem 0 1.5rem}\n.aa details.aa-q{border-bottom:1px solid #ebe5d6;padding:.85rem 0}\n.aa details.aa-q summary{font-size:14px;font-weight:700;list-style:none;padding-right:20px;position:relative;cursor:pointer}\n.aa details.aa-q summary::-webkit-details-marker{display:none}\n.aa details.aa-q summary::after{content:\"+\";position:absolute;right:0;top:0;color:#FAC775;font-size:18px;line-height:1}\n.aa details.aa-q[open] summary::after{content:\"\\2212\"}\n.aa .aa-a{font-size:13px;color:#3a3a3a;margin-top:.5rem}\n.aa .aa-a p{margin:0 0 .5rem}\n@media(max-width:600px){.aa .aa-vars,.aa .aa-ben{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\u003cdiv class=\"aa\"\u003e\n\n\u003cp\u003e\u003cspan class=\"aa-badge aa-badge-noir\"\u003eZinc alloy\u003c\/span\u003e \u003cspan class=\"aa-badge aa-badge-bleu\"\u003eOptical illusion\u003c\/span\u003e The \u003cstrong\u003eAXIOME desktop spinning top\u003c\/strong\u003e is one of those objects you place on your table for a moment and then cannot take your eyes off. Rising from a \u003cstrong\u003ecylindrical base\u003c\/strong\u003e is an \u003cstrong\u003eS-shaped sculpted ribbon\u003c\/strong\u003e, and at its summit, a \u003cstrong\u003emetallic sphere\u003c\/strong\u003e begins to spin in equilibrium, so quickly and smoothly that it appears to \u003cstrong\u003efloat in mid-air\u003c\/strong\u003e. This \u003cstrong\u003evisual levitation\u003c\/strong\u003e uses neither batteries nor electronics: only the momentum you provide with your fingertips and the laws of rotational mechanics. Made of \u003cstrong\u003ezinc alloy\u003c\/strong\u003e, which is dense and pleasant to hold, the piece is available in \u003cstrong\u003etwo sizes\u003c\/strong\u003e — 6.5 cm and 7.7 cm in height — and in \u003cstrong\u003enine color combinations\u003c\/strong\u003e for the body and ball: gray, silver, gold, or black, with a silver, gold, rose gold, or copper sphere. Both an anti-stress object, a scientific curiosity, and a small contemporary sculpture, AXIOME naturally finds its place next to a keyboard, on a bookshelf, or on an executive desk, where it almost always sparks the same question: how does it stay up?\u003c\/p\u003e\n\n\u003ch3 class=\"aa-title\"\u003eThe nine available finishes\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-vars\"\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v dark\" style=\"background: #6E6E6E;\"\u003eGRAY · SILVER BALL\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eSmall (6.5 cm) – Gray, silver ball\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eSize 6.5 cm, gray body, silver sphere\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v light\" style=\"background: #9A9A9A;\"\u003eSILVER · SILVER BALL\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eSmall (6.5 cm) – Silver, silver ball\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eSize 6.5 cm, bright monochromatic silver\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v dark\" style=\"background: linear-gradient(135deg,#6E6E6E 0%,#6E6E6E 60%,#E8B4C0 100%);\"\u003eGRAY · ROSE GOLD BALL\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eSmall (6.5 cm) – Gray, rose gold ball\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eSize 6.5 cm, gray body, rose gold sphere\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v light\" style=\"background: #C8A84B;\"\u003eGOLD · SILVER BALL\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eSmall (6.5 cm) – Gold, silver ball\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eSize 6.5 cm, gold body, silver sphere\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v dark\" style=\"background: #1A1A1A;\"\u003eBLACK · SILVER BALL\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eSmall (6.5 cm) – Black, silver ball\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eSize 6.5 cm, black body, silver sphere\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v light\" style=\"background: linear-gradient(135deg,#9A9A9A 0%,#9A9A9A 60%,#C8A84B 100%);\"\u003eSILVER · GOLD BALL\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eSmall (6.5 cm) – Silver, gold ball\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eSize 6.5 cm, silver body, gold sphere\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v dark\" style=\"background: #1A1A1A;\"\u003eBLACK · 7.7 CM\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eLarge (7.7 cm) – Black, silver ball\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eLarge size, black body, silver sphere\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v light\" style=\"background: linear-gradient(135deg,#9A9A9A 0%,#9A9A9A 60%,#C8A84B 100%);\"\u003eSILVER · 7.7 CM\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eLarge (7.7 cm) – Silver, gold ball\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eLarge size, silver body, gold sphere\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v dark\" style=\"background: linear-gradient(135deg,#6E6E6E 0%,#6E6E6E 60%,#8B5E2A 100%);\"\u003eGRAY · 7.7 CM\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eLarge (7.7 cm) – Gray, copper ball\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eLarge size, gray body, copper sphere\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-mat\"\u003e\n\n\u003ch3\u003eThe physics behind the visual levitation\u003c\/h3\u003e\n\n\u003cp\u003eA sphere spinning rapidly on a tiny contact point obeys the same principle as a spinning top or a gyroscope: \u003cstrong\u003econservation of angular momentum\u003c\/strong\u003e. As long as the rotation is fast, the sphere's axis tends to maintain its orientation and resists small disturbances; the object remains in balance where, if stationary, it would immediately fall. Friction, reduced to the absolute minimum, dissipates energy only gradually: the rotation continues, then slows down, and the sphere eventually stops. There is no perpetual motion here, simply a very beautiful demonstration of inertia.\u003c\/p\u003e\n\n\u003cp\u003eThe illusion of floating arises from the shape of the support: the S-ribbon guides the eye and conceals the contact point, so the eye perceives a ball suspended above the curve. As for the \u003cstrong\u003ezinc alloy\u003c\/strong\u003e, it is widely used for small, precision-molded parts: its density provides stability to the base, it is well-suited to fine shapes, and it accepts various finishes, from deep black to gold.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eWhy you will love it\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-ben\"\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eA striking effect\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe sphere seems to float above the ribbon: an illusion that intrigues both young and old.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eNo batteries or electronics\u003c\/span\u003e\u003cspan class=\"ds\"\u003eEverything relies on the momentum given by your fingertips and rotational mechanics.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eDense zinc alloy\u003c\/span\u003e\u003cspan class=\"ds\"\u003eAn object with a weighty feel, stable on the desk, with meticulous finishes.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eAnti-stress break\u003c\/span\u003e\u003cspan class=\"ds\"\u003eSpinning the sphere and watching it rotate offers a few seconds of peaceful concentration.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eNine combinations\u003c\/span\u003e\u003cspan class=\"ds\"\u003eTwo sizes and body\/ball combinations to match any decor.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eDesktop format\u003c\/span\u003e\u003cspan class=\"ds\"\u003eLess than 8 cm tall: it slips easily next to a screen, a keyboard, or on a shelf.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-des\"\u003e\n\n\u003cp class=\"t\"\u003eThe elegance of balance\u003c\/p\u003e\n\n\u003cdiv class=\"x\"\u003e\n\n\u003cp\u003eBalance has always been fascinating. Jugglers, tightrope walkers, childhood tops, and laboratory gyroscopes all tell the same story: that of an object defying a fall as long as it remains in motion. AXIOME condenses this narrative into a \u003cstrong\u003esmall metal sculpture\u003c\/strong\u003e, refined down to the essentials.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eS-ribbon\u003c\/strong\u003e draws a continuous, almost calligraphic curve that begins at the base to cradle the sphere. Nothing protrudes, nothing distracts: the form serves the illusion. When the ball spins, its reflections blur into a smooth halo, and one could believe they are seeing a \u003cstrong\u003eminiature planet\u003c\/strong\u003e suspended above its orbit.\u003c\/p\u003e\n\n\u003cp\u003eIt is an object of \u003cstrong\u003eactive contemplation\u003c\/strong\u003e. You spin it during a call, between two meetings, while pondering an idea — and for a few rotations, the mind settles. On a work desk as in a library, it brings that touch of scientific curiosity that is the signature of Labo objects.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-steps\"\u003e\n\n\u003ch4\u003eMaking AXIOME spin in four steps\u003c\/h4\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e1\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eSet up the base.\u003c\/strong\u003e Place the spinning top on a flat, stable, and horizontal surface, away from vibrations and drafts.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e2\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003ePlace the sphere.\u003c\/strong\u003e Gently deposit the ball into its spot at the top of the ribbon, without forcing it.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e3\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eGive it momentum.\u003c\/strong\u003e Pinch the sphere between your thumb and index finger and give it a clean, sharp spin, as if starting a top.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e4\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eObserve the illusion.\u003c\/strong\u003e Let the sphere spin: it appears to float, then gradually slows down. Spin it again whenever you like.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eComparison of the two sizes\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-cmp\"\u003e\n\n\u003ctable\u003e\n\n\u003cthead\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCriteria\u003c\/th\u003e\n\n\u003cth\u003e6.5 cm size\u003c\/th\u003e\n\n\u003cth\u003e7.7 cm size\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eHeight × width\u003c\/td\u003e\n\n\u003ctd\u003eApproximately 65 × 40 mm\u003c\/td\u003e\n\n\u003ctd\u003eApproximately 77 × 46 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eShape\u003c\/td\u003e\n\n\u003ctd\u003eSingle-piece S-ribbon\u003c\/td\u003e\n\n\u003ctd\u003eSlightly different shape, separate upper ring\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eBody colors\u003c\/td\u003e\n\n\u003ctd\u003eGray, silver, gold, black\u003c\/td\u003e\n\n\u003ctd\u003eBlack, silver, gray\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eSphere colors\u003c\/td\u003e\n\n\u003ctd\u003eSilver, gold, or rose gold depending on version\u003c\/td\u003e\n\n\u003ctd\u003eSilver, gold, or copper depending on version\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eNumber of versions\u003c\/td\u003e\n\n\u003ctd\u003eSix\u003c\/td\u003e\n\n\u003ctd\u003eThree\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eIdeal use\u003c\/td\u003e\n\n\u003ctd\u003eCompact desk, shelf, discreet gift\u003c\/td\u003e\n\n\u003ctd\u003eSlightly more present piece, executive desk\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-info\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eGood to know:\u003c\/strong\u003e the spin time depends on the momentum given, the flatness of the surface, and the cleanliness of the contact point. The sphere always eventually slows and stops: it is inertia, not perpetual motion, that creates this beautiful suspension effect. Discover other mechanical demonstrations in our \u003ca href=\"\/collections\/physique-et-mouvement\"\u003ephysics and movement\u003c\/a\u003e collection.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-tip\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e for a longer rotation, wipe the sphere and its contact point from time to time with a soft, dry cloth to remove dust and fingerprints. Avoid abrasive products that could tarnish the finish.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eTechnical specifications\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-sp\"\u003e\n\n\u003ctable\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\n\u003ctd\u003eVisual levitation desktop spinning top\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\n\u003ctd\u003eZinc alloy\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eComposition\u003c\/td\u003e\n\n\u003ctd\u003eCylindrical base, S-ribbon, metallic sphere\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e6.5 cm size\u003c\/td\u003e\n\n\u003ctd\u003eApproximately 65 mm high × 40 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e7.7 cm size\u003c\/td\u003e\n\n\u003ctd\u003eApproximately 77 mm high × 46 mm, separate upper ring\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eBody colors\u003c\/td\u003e\n\n\u003ctd\u003eGray, silver, gold, black\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eSphere colors\u003c\/td\u003e\n\n\u003ctd\u003eSilver, gold, rose gold, copper\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eNumber of versions\u003c\/td\u003e\n\n\u003ctd\u003eNine\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eOperation\u003c\/td\u003e\n\n\u003ctd\u003eManual, by setting the sphere into rotation\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003ePower source\u003c\/td\u003e\n\n\u003ctd\u003eNone (non-electric)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eRecommended age\u003c\/td\u003e\n\n\u003ctd\u003e14 years and older\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eWeight\u003c\/td\u003e\n\n\u003ctd\u003eNot disclosed\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-warn\"\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrecautions:\u003c\/strong\u003e object recommended for ages 14 and up. The sphere is a small part that can be swallowed: keep the top out of reach of young children and animals. Do not spin the sphere off its support and always place the object on a stable surface to avoid falls that could mark the finish.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-gift\"\u003e\n\n\u003ch3\u003eA gift idea for curious minds\u003c\/h3\u003e\n\n\u003cp\u003eAXIOME makes a refined \u003cstrong\u003edesktop gift\u003c\/strong\u003e for a birthday, promotion, retirement, Father's Day, or a Secret Santa among colleagues. It appeals to engineers, design enthusiasts, and anyone who enjoys having an object on hand that is both beautiful and intriguing.\u003c\/p\u003e\n\n\u003cp\u003eTo complete the gift, explore our \u003ca href=\"\/collections\/casse-tetes-et-bureau\"\u003epuzzles and desktop objects\u003c\/a\u003e, or our \u003ca href=\"\/collections\/bureau-et-hi-tech\"\u003eoffice and high-tech\u003c\/a\u003e selection to create a workspace gift set.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-faq\"\u003e\n\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eHow does the sphere appear to float?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe effect relies on two components. First, \u003cstrong\u003erotational mechanics\u003c\/strong\u003e: a sphere spinning rapidly on a tiny contact point maintains its orientation thanks to its \u003cstrong\u003eangular momentum\u003c\/strong\u003e, exactly like a spinning top or a gyroscope. It therefore remains balanced as long as the speed is sufficient. Second, the \u003cstrong\u003eshape of the support\u003c\/strong\u003e: the S-ribbon is designed to visually mask the contact point, so the eye perceives a ball suspended above the curve. There are no advertised magnets, no electronics, and no hidden tricks: only physics and a design created for illusion. This is what makes the object so fascinating to observe and explain.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eHow long does the sphere spin?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe manufacturer does not specify an exact duration, and we prefer not to invent one. The spin time depends mostly on the \u003cstrong\u003emomentum given\u003c\/strong\u003e at the start, the \u003cstrong\u003eflatness of the surface\u003c\/strong\u003e on which the base rests, and the \u003cstrong\u003ecleanliness of the contact point\u003c\/strong\u003e. With a clean spin on a level desk, the sphere rotates long enough to fully enjoy the illusion before slowing down. It always eventually stops: it is \u003cstrong\u003enot a perpetual motion machine\u003c\/strong\u003e, which is physically impossible, but a beautiful demonstration of inertia. With a little practice, you will quickly learn the motion that produces the longest rotations.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat is the difference between the 6.5 cm and 7.7 cm sizes?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e6.5 cm size\u003c\/strong\u003e measures approximately 65 mm high by 40 mm wide; its S-ribbon is a single piece. It comes in six versions, with a gray, silver, gold, or black body and a silver, gold, or rose gold sphere. The \u003cstrong\u003e7.7 cm size\u003c\/strong\u003e measures approximately 77 mm high by 46 mm wide and features a \u003cstrong\u003eslightly different shape\u003c\/strong\u003e, with a separate upper ring. It is available in three versions: black with a silver ball, silver with a gold ball, and gray with a copper ball. The choice is primarily a matter of desk presence and preference for one silhouette over the other.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eDoes the top work with a magnet or a battery?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe manufacturer presents this object as \u003cstrong\u003enon-electric\u003c\/strong\u003e: it contains \u003cstrong\u003eno batteries, no power supply, and no motor\u003c\/strong\u003e. The supplier also makes no mention of magnets. All animation comes from the \u003cstrong\u003emomentum\u003c\/strong\u003e you give the sphere with your fingertips, and then the inertia that extends its rotation. This distinguishes AXIOME from magnetic levitation objects, which hold an element in suspension using a continuously powered electromagnetic field. Here, there are no cables and no electrical maintenance: the object is always ready, you just need to spin it. This simplicity makes it a very practical desk companion.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eIs this object suitable for children?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe manufacturer recommends AXIOME for ages \u003cstrong\u003e14 and up\u003c\/strong\u003e. The sphere is a \u003cstrong\u003esmall part\u003c\/strong\u003e that could be swallowed by a young child: the object must therefore be kept out of their reach. For a curious teenager, however, it is an excellent gateway to the \u003cstrong\u003ephysics of rotation\u003c\/strong\u003e: one can experiment with different spins, compare durations, observe precession as the sphere slows, and discuss angular momentum. Designed primarily as a \u003cstrong\u003edesktop object for adults\u003c\/strong\u003e, it also fits on the desk of a science-loving high school student, provided it is used reasonably and with care.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eHow do I maintain the finish?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003ezinc alloy\u003c\/strong\u003e is very simple to clean. From time to time, wipe a \u003cstrong\u003esoft, dry, lint-free cloth\u003c\/strong\u003e over the base, ribbon, and sphere to remove dust and fingerprints. Avoid \u003cstrong\u003eabrasive products\u003c\/strong\u003e, scouring sponges, and solvents, which could tarnish or scratch the finish, particularly on the gold and rose gold versions. A clean contact point also promotes longer rotations: remember to wipe it gently. Finally, keep the object away from prolonged moisture and avoid dropping it, as a fall could mark the surface or deform the ribbon.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhich version should I choose as a gift?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eIt all depends on the recipient's decor and personality. The \u003cstrong\u003eblack\u003c\/strong\u003e versions suit contemporary desks and dark equipment; the \u003cstrong\u003esilver\u003c\/strong\u003e finishes provide a bright, technical touch. The \u003cstrong\u003egold\u003c\/strong\u003e and \u003cstrong\u003erose gold\u003c\/strong\u003e spheres play the role of a precious object, ideal for a bolder gift. The \u003cstrong\u003ecopper\u003c\/strong\u003e sphere of the large gray size offers a warm contrast. If you are hesitant, the \u003cstrong\u003e6.5 cm\u003c\/strong\u003e size fits anywhere, while the \u003cstrong\u003e7.7 cm\u003c\/strong\u003e model makes a stronger statement. In any case, the surprise of the visual levitation remains the same upon first use.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\n\n\u003cp\u003e \u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Comment la sphère semble-t-elle flotter ?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Une sphère qui tourne vite sur un point de contact minuscule conserve son orientation grâce à son moment cinétique, comme une toupie ou un gyroscope, et reste en équilibre tant que la vitesse est suffisante. Le ruban en S masque visuellement le point d'appui, si bien que l'œil perçoit une bille suspendue. Aucune électronique : uniquement de la physique et un design pensé pour l'illusion.\"}}, {\"@type\": \"Question\", \"name\": \"Combien de temps la sphère tourne-t-elle ?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Le fabricant n'indique pas de durée précise. Elle dépend de l'élan donné, de la planéité de la surface et de la propreté du point de contact. Avec un lancer franc sur un bureau horizontal, la rotation dure assez pour profiter de l'illusion avant de ralentir. La sphère finit toujours par s'arrêter : c'est une démonstration d'inertie, pas un mouvement perpétuel.\"}}, {\"@type\": \"Question\", \"name\": \"Quelle est la différence entre les gabarits 6,5 cm et 7,7 cm ?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Le gabarit 6,5 cm mesure environ 65 × 40 mm, avec un ruban en S d'un seul tenant, et existe en six versions. Le gabarit 7,7 cm mesure environ 77 × 46 mm, présente une forme légèrement différente avec un anneau supérieur séparé, et existe en trois versions : noir bille argent, argent bille dorée et gris bille cuivrée.\"}}, {\"@type\": \"Question\", \"name\": \"La toupie fonctionne-t-elle avec un aimant ou une pile ?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"L'objet est présenté comme non électrique : ni pile, ni batterie, ni moteur, et le fournisseur ne mentionne pas d'aimant. Toute l'animation vient de l'élan donné à la sphère du bout des doigts, puis de l'inertie qui prolonge la rotation. Contrairement aux objets à lévitation magnétique, aucun câble ni alimentation n'est nécessaire : il suffit de lancer la sphère.\"}}, {\"@type\": \"Question\", \"name\": \"Est-ce un objet adapté aux enfants ?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Le fabricant recommande AXIOME à partir de 14 ans. La sphère est une petite pièce qui pourrait être avalée : tenez l'objet hors de portée des jeunes enfants. Pour un adolescent curieux, c'est en revanche une belle introduction à la physique de la rotation, idéale pour comparer des lancers et observer la précession lorsque la sphère ralentit.\"}}, {\"@type\": \"Question\", \"name\": \"Comment entretenir la finition ?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Passez de temps en temps un chiffon doux, sec et non pelucheux sur le socle, le ruban et la sphère pour retirer poussière et traces de doigts. Évitez produits abrasifs, éponges grattantes et solvants, surtout sur les finitions dorées et or rose. Un point de contact propre favorise des rotations plus longues. Évitez aussi l'humidité prolongée et les chutes.\"}}, {\"@type\": \"Question\", \"name\": \"Quelle version choisir pour offrir ?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Les versions noires s'accordent aux bureaux contemporains, l'argent apporte une touche lumineuse et technique, le doré et la sphère or rose jouent la carte de l'objet précieux, et la sphère cuivrée offre un contraste chaleureux. Le gabarit 6,5 cm se glisse partout, le 7,7 cm affirme davantage sa présence. L'effet de lévitation visuelle reste le même pour toutes.\"}}]}\u003c\/script\u003e\n","brand":"Atelier Atypique","offers":[{"title":"Black – silver ballpoint \/ Small","offer_id":54860756255043,"sku":"1005008504171030-black-slive","price":34.9,"currency_code":"EUR","in_stock":true},{"title":"Black – silver ballpoint \/ Large","offer_id":54860756025667,"sku":"1005008504171030-black","price":44.9,"currency_code":"EUR","in_stock":true},{"title":"Silver – silver marble \/ Small","offer_id":54860756222275,"sku":"1005008504171030-slive-slive","price":34.9,"currency_code":"EUR","in_stock":true},{"title":"Grey – rose gold bead \/ Small","offer_id":54860755992899,"sku":"1005008504171030-gray-rose gold","price":34.9,"currency_code":"EUR","in_stock":true},{"title":"Money – gold ball \/ Small","offer_id":54860756091203,"sku":"1005008504171030-slive-gold","price":34.9,"currency_code":"EUR","in_stock":true},{"title":"Money – gold ball \/ 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class=\"aa\"\u003e\n\n\u003cp\u003e\u003cspan class=\"aa-badge aa-badge-noir\"\u003eThe Lab\u003c\/span\u003e \u003cspan class=\"aa-badge aa-badge-bleu\"\u003eEducational Equipment\u003c\/span\u003e How high must the marble be raised to complete the loop? This \u003cstrong\u003edemonstration loop track\u003c\/strong\u003e turns the question into an experimental protocol. Its \u003cstrong\u003eV-profile aluminum rails\u003c\/strong\u003e launch from a long \u003cstrong\u003estarting ramp\u003c\/strong\u003e, trace one or two vertical loops, and then end in a \u003cstrong\u003ecatching net\u003c\/strong\u003e that collects the marble at the finish. The whole assembly is mounted on a \u003cstrong\u003ewooden base\u003c\/strong\u003e approximately 40 cm long. Two versions are available: the \u003cstrong\u003esingle loop\u003c\/strong\u003e for a direct demonstration, or the \u003cstrong\u003edouble loop\u003c\/strong\u003e, which combines a large circle of approximately 7 cm in radius with a small one of approximately 3.5 cm to compare passage thresholds. According to the manual, the demonstrator comes with a \u003cstrong\u003esteel marble\u003c\/strong\u003e and a \u003cstrong\u003eplastic marble\u003c\/strong\u003e 2.5 cm in diameter: perfect for testing the influence of mass and observing that it changes almost nothing. Conservation of energy, minimum speed at the summit, friction: every launch becomes a measurement, every failure a hypothesis to be reformulated.\u003c\/p\u003e\n\n\u003ch3 class=\"aa-title\"\u003eAvailable versions\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-vars\"\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v light\" style=\"background: #9A9A9A;\"\u003eSINGLE LOOP\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eSingle loop\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eOne vertical loop: the most direct demonstration\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v dark\" style=\"background: #1A1A1A;\"\u003eDOUBLE LOOP\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eDouble loop\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eLarge circle (≈ 7 cm radius) and small circle (≈ 3.5 cm) for comparison\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-mat\"\u003e\n\n\u003ch3\u003eEnergy, height, and critical velocity\u003c\/h3\u003e\n\n\u003cp\u003eReleased at the top of the ramp, the marble possesses \u003cstrong\u003egravitational potential energy\u003c\/strong\u003e proportional to its height. As it descends, this reserve is converted into \u003cstrong\u003ekinetic energy\u003c\/strong\u003e. Part of this energy is then reinvested to regain altitude in the loop. The balance, established by 19th-century physicists under the name of \u003cstrong\u003econservation of mechanical energy\u003c\/strong\u003e, allows for the prediction of the marble's speed at every point of the journey, friction notwithstanding.\u003c\/p\u003e\n\n\u003cp\u003eAt the top of the circle, the only question is whether the marble is moving fast enough for the curved trajectory to be sustainable: v² ≥ g·R is required. Coupled with the energy balance, this condition provides a minimum starting height of \u003cstrong\u003e2.5 times the radius\u003c\/strong\u003e for an object that slides, and approximately \u003cstrong\u003e2.7 times the radius\u003c\/strong\u003e for a solid marble that rolls, because it also stores energy in its rotation. With two loops of different radii, you can verify that the small circle can be cleared from a much lower starting point than the large one.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eWhat this demonstrator brings\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-ben\"\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eA quantitative experience\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe starting height can be varied step-by-step: you look for the passage threshold rather than just watching.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eTwo radii to compare\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe double loop places a large and a small circle side by side: the effect of the radius is immediately obvious.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e➤\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eTwo marbles, one lesson\u003c\/span\u003e\u003cspan class=\"ds\"\u003eSteel or plastic, same diameter: the comparison proves that mass does not play a role in the passage condition.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eV-rail for guidance\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe V-profile of the aluminum keeps the marble on its trajectory for reproducible trials.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eControlled finish\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe catching net stops the marble at the end of the run: no chasing under the tables.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e➤\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eNo external energy\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe only source of movement is gravity: the object works everywhere, without batteries or plugs.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-des\"\u003e\n\n\u003cp class=\"t\"\u003eThe laboratory classroom, an elegant version\u003c\/p\u003e\n\n\u003cdiv class=\"x\"\u003e\n\n\u003cp\u003eIn the high schools of yesteryear, physics cabinets lined up wood-and-brass demonstration apparatuses designed so that an entire class could see the phenomenon from the back of the room. This loop track follows in that tradition: a sturdy \u003cstrong\u003ewooden base\u003c\/strong\u003e, neat \u003cstrong\u003ealuminum\u003c\/strong\u003e rails, and a path that can be read from a distance.\u003c\/p\u003e\n\n\u003cp\u003eBut its real wealth lies elsewhere: it invites you to \u003cstrong\u003emeasure\u003c\/strong\u003e. Identify the starting height, note the result, try again a little lower, compare the large and small loops, swap the steel marble for the plastic one. In half an hour, students retrace the intellectual path of the scientists who founded mechanics: observe, conjecture, verify. And at home, the object keeps that little thrill intact when the marble hesitates at the summit.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-steps\"\u003e\n\n\u003ch4\u003eFour-step protocol\u003c\/h4\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e1\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eInstall the stand.\u003c\/strong\u003e Place the base on a horizontal table, clear of the catching net. If necessary, check for levelness with a spirit level.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e2\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eMark the heights.\u003c\/strong\u003e Mark several starting points on the ramp (a small piece of repositionable tape is enough) and measure their height above the bottom of the loop.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e3\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eRelease without push.\u003c\/strong\u003e Place the marble on a mark and release it without pushing. Note whether it clears the loop, or both loops on the double version.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e4\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eCompare and conclude.\u003c\/strong\u003e Repeat with the other marble, then compare the measured threshold height to the theoretical value of 2.7 times the radius. The difference illustrates the role of friction.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eComparison of the two versions\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-cmp\"\u003e\n\n\u003ctable\u003e\n\n\u003cthead\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCriterion\u003c\/th\u003e\n\n\u003cth\u003eSingle loop\u003c\/th\u003e\n\n\u003cth\u003eDouble loop\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eNumber of loops\u003c\/td\u003e\n\n\u003ctd\u003eOne\u003c\/td\u003e\n\n\u003ctd\u003eTwo, of different radii\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eRadius\/radii indicated\u003c\/td\u003e\n\n\u003ctd\u003eNot specified for this version\u003c\/td\u003e\n\n\u003ctd\u003e≈ 7 cm and ≈ 3.5 cm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eRail\u003c\/td\u003e\n\n\u003ctd\u003eV-profile aluminum\u003c\/td\u003e\n\n\u003ctd\u003eV-profile aluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eBase\u003c\/td\u003e\n\n\u003ctd\u003eWood, ≈ 40 cm\u003c\/td\u003e\n\n\u003ctd\u003eWood, ≈ 40 cm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eMarbles (manual)\u003c\/td\u003e\n\n\u003ctd\u003eSteel and plastic, Ø 2.5 cm\u003c\/td\u003e\n\n\u003ctd\u003eSteel and plastic, Ø 2.5 cm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eKey experiment\u003c\/td\u003e\n\n\u003ctd\u003eFind minimum passage height\u003c\/td\u003e\n\n\u003ctd\u003eCompare radius effect on threshold\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eRecommended audience\u003c\/td\u003e\n\n\u003ctd\u003eDiscovery, middle school, office\u003c\/td\u003e\n\n\u003ctd\u003eHigh school, higher ed, enthusiasts\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cp\u003eWant to explore other mechanical phenomena? Our \u003ca href=\"\/collections\/physique-et-mouvement\"\u003ephysics and motion\u003c\/a\u003e collection brings together pendulums, motors, and demonstrators that ideally complement this track.\u003c\/p\u003e\n\n\u003cdiv class=\"aa-info\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eGood to know:\u003c\/strong\u003e the loop radii and marble diameters are those indicated in the \u003cstrong\u003emanufacturer's manual\u003c\/strong\u003e; the base length is estimated from a photo. The manufacturer does not specify the total height, weight, or whether the device is delivered pre-assembled.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-tip\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e film the passes in slow motion with a smartphone placed facing the loop. Frame by frame, you can clearly see the marble slow down at the summit, and sometimes lift slightly off the rail just before stalling: an excellent aid for an experimental report.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eTechnical specifications\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-sp\"\u003e\n\n\u003ctable\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eType\u003c\/td\u003e\n\n\u003ctd\u003eDemonstration loop track (centripetal force)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eVersions\u003c\/td\u003e\n\n\u003ctd\u003eSingle loop or double loop\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eRails\u003c\/td\u003e\n\n\u003ctd\u003eAluminum, V-profile\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eLoop radius (double version)\u003c\/td\u003e\n\n\u003ctd\u003e≈ 7 cm and ≈ 3.5 cm (manual)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eMarbles (manual)\u003c\/td\u003e\n\n\u003ctd\u003e1 steel marble and 1 plastic marble, Ø 2.5 cm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eBase\u003c\/td\u003e\n\n\u003ctd\u003eWood\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eBase length\u003c\/td\u003e\n\n\u003ctd\u003e≈ 40 cm (photo estimate)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eFinish\u003c\/td\u003e\n\n\u003ctd\u003eMarble catching net\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eOperation\u003c\/td\u003e\n\n\u003ctd\u003eGravity, no power supply\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eConcepts covered\u003c\/td\u003e\n\n\u003ctd\u003eEnergy conservation, centripetal force, minimum speed at summit\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eHeight \/ weight\u003c\/td\u003e\n\n\u003ctd\u003eNot provided\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-warn\"\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrecautions:\u003c\/strong\u003e the marbles are \u003cstrong\u003esmall parts\u003c\/strong\u003e: not recommended for children under 3; with children, an adult must always supervise the experiment. The steel marble can damage floors or fragile objects if dropped: work over a table. Do not bend the rails, as their shape is critical to successful runs.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-gift\"\u003e\n\n\u003ch3\u003eA gift for minds that want to understand\u003c\/h3\u003e\n\n\u003cp\u003eThis demonstrator will delight a \u003cstrong\u003ephysics teacher\u003c\/strong\u003e who wants to refresh their lessons, a high school or prep school student, a science club, or a parent who enjoys conducting experiments with their teenagers. It is also an original gift for a mechanical engineer or a roller coaster enthusiast.\u003c\/p\u003e\n\n\u003cp\u003eTo complete the set, discover the entire selection of \u003ca href=\"\/collections\/objets-scientifiques\"\u003escientific objects from The Lab\u003c\/a\u003e or a puzzle from our \u003ca href=\"\/collections\/casse-tetes-et-bureau\"\u003epuzzles and office\u003c\/a\u003e collection.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eFrequently asked questions\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-faq\"\u003e\n\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eShould I choose the single or the double loop?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eIt all depends on what you want to show. The \u003cstrong\u003esingle loop\u003c\/strong\u003e is enough to introduce centripetal force and search for the minimum starting height: it is the most readable version for a first discovery or for an office. The \u003cstrong\u003edouble loop\u003c\/strong\u003e adds a valuable comparative dimension: with a large circle of approximately 7 cm in radius and a small one of 3.5 cm, it shows concretely that the passage threshold depends on the radius. For use in class, in a science club, or for an enthusiast who likes to experiment, the double version offers significantly more experimental scenarios.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat are the two marbles provided for?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eAccording to the manual, the demonstrator comes with a \u003cstrong\u003esteel marble\u003c\/strong\u003e and a \u003cstrong\u003eplastic marble\u003c\/strong\u003e of the same diameter, 2.5 cm. Comparing them illustrates a result that is often surprising: the condition for passing the summit does \u003cstrong\u003enot depend on the mass\u003c\/strong\u003e. Indeed, mass appears on both sides of the energy and force equations, and cancels out. In practice, slight differences may appear because the lighter marble is more sensitive to friction and small imperfections in the rail. Discussing these differences is one of the educational benefits of the experiment, which teaches how to distinguish between a theoretical model and a real-world measurement.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eFrom what height should the marble be released?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe theory provides a clear guideline. For an object sliding without friction, the start must be at least \u003cstrong\u003e2.5 radii\u003c\/strong\u003e of the loop, measured from the lowest point of the circle. For a solid marble that rolls, the energy spent on its own rotation raises the threshold to approximately \u003cstrong\u003e2.7 times the radius\u003c\/strong\u003e. With a 7 cm radius loop, this represents slightly less than 19 cm of starting height. Real friction increases this value further: this is the whole point of measuring it and comparing it to the calculation.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat academic level is the demonstrator suitable for?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eIt adapts to many levels. In \u003cstrong\u003emiddle school\u003c\/strong\u003e, one simply observes the link between height and speed and formulates hypotheses. In \u003cstrong\u003ehigh school\u003c\/strong\u003e, it illustrates the conservation of mechanical energy and forces in circular motion. In \u003cstrong\u003eprep school or university\u003c\/strong\u003e, it allows one to explore the rotational energy of the marble and the analysis of friction. It also works very well in scientific outreach or at home with curious teenagers. With young children, the presence of an adult is essential, as the marbles are small parts to be kept out of reach of children under 3.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat is the net at the end of the rail for?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003ecatching net\u003c\/strong\u003e stops the marble at the end of its run. Without it, a marble launched at full speed would leave the base and roll on the table, or even fall to the floor. It makes series of tests much more fluid: you retrieve the marble in the same place each time, note the result, and start again immediately. It is also a welcome safety feature with the heavier \u003cstrong\u003esteel marble\u003c\/strong\u003e, which could damage wood flooring or hit a fragile object if it falls. Simply keep the space in front of the net clear so the marble can enter freely.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhy V-shaped rails?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eV-profile\u003c\/strong\u003e creates two points of contact between the marble and the rail. The marble is thus naturally centered and guided throughout the length of the path, including in the inverted part of the loop, where a flat rail would let it drift laterally. This guidance improves the \u003cstrong\u003ereproducibility of trials\u003c\/strong\u003e: at the same starting height, the marble follows the same trajectory from one launch to the next, which is essential for measuring a passage threshold. \u003cstrong\u003eAluminum\u003c\/strong\u003e, being light and rigid, retains its shape well. Regular dusting with a dry cloth is enough to preserve the quality of the roll.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eIs the demonstrator delivered assembled?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe manufacturer \u003cstrong\u003edoes not specify\u003c\/strong\u003e whether the device is shipped fully assembled or if certain elements, such as the net or the rails, must be attached to the base upon receipt. We prefer not to claim anything we cannot guarantee. The photos show a simple assembly consisting of the \u003cstrong\u003ewooden base\u003c\/strong\u003e, the aluminum rails, and the catching net, without any mechanism or electronics. If this information is decisive for you, for example to prepare a lab session for a specific date, contact us before your order and we will respond with the elements we have available.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Atelier Atypique","offers":[{"title":"Simple loop","offer_id":54860800688451,"sku":"1005012000667123-single lap-CN","price":169.9,"currency_code":"EUR","in_stock":true},{"title":"Double loop","offer_id":54860800655683,"sku":"1005012000667123-double circles-CN","price":169.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/S60be848bb0ff4f158758504549a17fa95.webp?v=1791061033"},{"product_id":"flipping-rings-force-decomposition-and-synthesis-demonstrator-physics-experiment-for-classroom-teaching-demonstration","title":"Force decomposition and composition demonstrator, ring - 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td:first-child{font-weight:700;color:#1A1A1A;width:45%}\n.aa .aa-gift{background:linear-gradient(135deg,#FFFDF7,#FFF9E8);border:1px solid #FAC775;border-radius:10px;padding:1.3rem 1.5rem;margin:1.5rem 0}\n.aa .aa-gift h3{color:#5C3A1E;font-size:16px;margin:0 0 .6rem}\n.aa .aa-gift p{font-size:14px}\n.aa .aa-faq{margin:1rem 0 1.5rem}\n.aa details.aa-q{border-bottom:1px solid #ebe5d6;padding:.85rem 0}\n.aa details.aa-q summary{font-size:14px;font-weight:700;list-style:none;padding-right:20px;position:relative;cursor:pointer}\n.aa details.aa-q summary::-webkit-details-marker{display:none}\n.aa details.aa-q summary::after{content:\"+\";position:absolute;right:0;top:0;color:#FAC775;font-size:18px;line-height:1}\n.aa details.aa-q[open] summary::after{content:\"\\2212\"}\n.aa .aa-a{font-size:13px;color:#3a3a3a;margin-top:.5rem}\n.aa .aa-a p{margin:0 0 .5rem}\n@media(max-width:600px){.aa .aa-vars,.aa .aa-ben{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\u003cdiv class=\"aa\"\u003e\n\n\u003cp\u003e\u003cspan class=\"aa-badge aa-badge-noir\"\u003eThe Lab\u003c\/span\u003e \u003cspan class=\"aa-badge aa-badge-bleu\"\u003eEducational Equipment\u003c\/span\u003e Three spheres suspended in the heart of a ring, a few taut strings, and suddenly the vectors from the physics textbook come to life. This \u003cstrong\u003eforce decomposition and composition demonstrator\u003c\/strong\u003e makes one of the fundamental principles of mechanics visible: an object remains stationary when the forces acting upon it cancel each other out. A large \u003cstrong\u003emetal ring\u003c\/strong\u003e with the appearance of an aluminum rim is mounted vertically on a \u003cstrong\u003ewhite tubular stand\u003c\/strong\u003e. Inside, \u003cstrong\u003ethree green spheres\u003c\/strong\u003e are held by \u003cstrong\u003etaut links\u003c\/strong\u003e that materialize the directions of the forces. A unique feature of this model: the \u003cstrong\u003etilting ring\u003c\/strong\u003e allows you to change the orientation of the entire assembly and observe how \u003cstrong\u003eequilibrium\u003c\/strong\u003e is restored. With its \u003cstrong\u003e50.5 cm height\u003c\/strong\u003e, 48 cm width, and 15 cm depth, it can be seen from the back of a classroom. An \u003cstrong\u003eeducational physics tool\u003c\/strong\u003e with a graphic design, it also makes a striking display object for an engineer's office.\u003c\/p\u003e\n\n\u003ch3 class=\"aa-title\"\u003eThe model\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-vars\"\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v light\" style=\"background: #9A9A9A;\"\u003eUNIQUE MODEL\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eUnique model\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eTilting metal ring, 3 green spheres, white tubular stand\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v dark\" style=\"background: linear-gradient(135deg,#F5F0E8 0%,#2E6B3F 100%);\"\u003e505 × 480 × 150 MM\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eDimensions\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eHeight 50.5 cm · width 48 cm · depth 15 cm\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-mat\"\u003e\n\n\u003ch3\u003eComposing and decomposing a force\u003c\/h3\u003e\n\n\u003cp\u003eA force is represented by an arrow, a \u003cstrong\u003evector\u003c\/strong\u003e, which has a direction, a sense, and a magnitude. When several forces act on the same point, they can be replaced by a single force, their \u003cstrong\u003eresultant\u003c\/strong\u003e: this is the composition of forces. Conversely, a force can be decomposed into several components along chosen directions. The Flemish mathematician Simon Stevin illustrated this as early as 1586 with his famous \"garland\" placed on an inclined plane, and the \u003cstrong\u003eparallelogram rule\u003c\/strong\u003e provides the geometric construction for it.\u003c\/p\u003e\n\n\u003cp\u003eWhen an object is motionless, the vector sum of the forces acting upon it is zero: this is the \u003cstrong\u003econdition of equilibrium\u003c\/strong\u003e, a direct consequence of Newton's laws. In this demonstrator, each sphere is held by taut links whose directions are visible; their tensions, combined with the weight of the sphere, cancel each other out exactly. By tilting the ring, the angles are modified, and you can see the equilibrium reorganize, which makes the way the intensity of each component depends on its direction tangible.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eWhy this demonstrator is compelling\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-ben\"\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eVectors become visible\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe taut links literally draw the directions of the forces: the diagram on the board gains depth.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eLarge, legible format\u003c\/span\u003e\u003cspan class=\"ds\"\u003eWith a ring approximately 48 cm wide, the demonstration remains visible to an entire class.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e➤\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eTilting ring\u003c\/span\u003e\u003cspan class=\"ds\"\u003eChanging the orientation of the ring allows for comparing multiple equilibrium configurations with the same device.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eGraphic contrast\u003c\/span\u003e\u003cspan class=\"ds\"\u003eGreen spheres, metal ring, and white stand: immediate legibility, even from a distance.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eNo power supply\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe demonstrator relies solely on gravity and the tension of the links: nothing to plug in.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e➤\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eAn object with character\u003c\/span\u003e\u003cspan class=\"ds\"\u003eOutside the classroom, its technical sculpture silhouette is intriguing on a desk or shelf.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-des\"\u003e\n\n\u003cp class=\"t\"\u003eWhen equilibrium becomes a work of art\u003c\/p\u003e\n\n\u003cdiv class=\"x\"\u003e\n\n\u003cp\u003eLong before calculation software, engineers dimensioned bridges, cranes, and frames by drawing force polygons with a ruler and compass. This \u003cstrong\u003egraphic statics\u003c\/strong\u003e enabled the construction of the great metal structures of the 19th century. This demonstrator offers a three-dimensional version of that: each taut link is a construction line, each sphere a structural node.\u003c\/p\u003e\n\n\u003cp\u003eIts \u003cstrong\u003emetal ring\u003c\/strong\u003e evokes a bicycle wheel, its white stand the sobriety of a laboratory instrument, its \u003cstrong\u003egreen spheres\u003c\/strong\u003e the precision of a colored diagram. In front of it, students understand at a glance why a highly inclined cable must be much tighter than a vertical cable to carry the same load. And when the ring tilts, the equilibrium is recomposed before their eyes, silent proof that the laws of mechanics do not depend on one's point of view.\u003c\/p\u003e\n\n\u003cp\u003eWe then measure the universality of \u003cstrong\u003estatics\u003c\/strong\u003e: the same rules govern the tension of a clothesline, the inclination of a suspension bridge's stays, and the work of the muscles that maintain our posture. One single object, and a whole section of the built world becomes legible.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-steps\"\u003e\n\n\u003ch4\u003eUsing the demonstrator in four steps\u003c\/h4\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e1\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eSet up the device.\u003c\/strong\u003e Place the stand on a stable, horizontal table with sufficient clearance around the ring (48 cm wide, 50.5 cm high).\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e2\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eObserve the initial equilibrium.\u003c\/strong\u003e Note the position of the three spheres and the direction of each link: have students identify the forces acting on each sphere.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e3\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eTilt the ring.\u003c\/strong\u003e Gently change the orientation of the ring and observe how the links and spheres adopt a new configuration.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e4\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eDiagram and conclude.\u003c\/strong\u003e Reproduce the vectors of each configuration on the board, construct the parallelograms, and verify that the resultant is zero at equilibrium.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eComparison\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-cmp\"\u003e\n\n\u003ctable\u003e\n\n\u003cthead\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCriteria\u003c\/th\u003e\n\n\u003cth\u003eThis ring demonstrator\u003c\/th\u003e\n\n\u003cth\u003eClassic force table\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003ePrinciple\u003c\/td\u003e\n\n\u003ctd\u003eSpheres suspended by taut links in a ring\u003c\/td\u003e\n\n\u003ctd\u003eStrings, pulleys, and calibrated weights around a graduated disc\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eOrientation\u003c\/td\u003e\n\n\u003ctd\u003eVertical, tilting ring\u003c\/td\u003e\n\n\u003ctd\u003eHorizontal\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eClassroom visibility\u003c\/td\u003e\n\n\u003ctd\u003eLarge format, readable from afar\u003c\/td\u003e\n\n\u003ctd\u003eMainly for close-up practical work\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eQuantitative measurement\u003c\/td\u003e\n\n\u003ctd\u003eQualitative reading of directions\u003c\/td\u003e\n\n\u003ctd\u003eMeasurement of angles and weights\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eSpace requirement\u003c\/td\u003e\n\n\u003ctd\u003e50.5 × 48 × 15 cm\u003c\/td\u003e\n\n\u003ctd\u003eVariable\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eKey strength\u003c\/td\u003e\n\n\u003ctd\u003eCollective and visual demonstration\u003c\/td\u003e\n\n\u003ctd\u003eQuantitative exercises\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cp\u003eTo complete your equipment, our \u003ca href=\"\/collections\/physique-et-mouvement\"\u003ephysics and motion\u003c\/a\u003e collection brings together mechanics demonstrators, pendulums, and Stirling engines.\u003c\/p\u003e\n\n\u003cdiv class=\"aa-info\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eGood to know:\u003c\/strong\u003e the dimensions provided are \u003cstrong\u003e505 mm high, 480 mm wide, and 150 mm deep\u003c\/strong\u003e. The manufacturer provides no other technical information (weight, stand material, link adjustment): the product sheet describes what is shown in the photos.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-tip\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e photograph the device from the front in each configuration, then project the image and draw the vectors directly onto it. Students can then measure the angles with a protractor and construct the force parallelograms on a faithful image of the assembly.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eTechnical specifications\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-sp\"\u003e\n\n\u003ctable\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eType\u003c\/td\u003e\n\n\u003ctd\u003eForce decomposition and composition demonstrator\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eMain element\u003c\/td\u003e\n\n\u003ctd\u003eMetal ring, aluminum appearance (per photos)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eSpecial feature\u003c\/td\u003e\n\n\u003ctd\u003eTilting ring\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eSuspended masses\u003c\/td\u003e\n\n\u003ctd\u003e3 green spheres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eConnections\u003c\/td\u003e\n\n\u003ctd\u003eTaut links (strings or cables) inside the ring\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eSupport\u003c\/td\u003e\n\n\u003ctd\u003eWhite tubular stand\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eHeight\u003c\/td\u003e\n\n\u003ctd\u003e505 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eWidth\u003c\/td\u003e\n\n\u003ctd\u003e480 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eDepth\u003c\/td\u003e\n\n\u003ctd\u003e150 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eOperation\u003c\/td\u003e\n\n\u003ctd\u003eGravity and tension, no power supply\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eConcepts covered\u003c\/td\u003e\n\n\u003ctd\u003eVectors, resultant, static equilibrium, parallelogram of forces\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eWeight\u003c\/td\u003e\n\n\u003ctd\u003eNot disclosed\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-warn\"\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrecautions:\u003c\/strong\u003e install the demonstrator on a \u003cstrong\u003estable\u003c\/strong\u003e surface, away from the edge of the table: its height makes it sensitive to shocks. Tilt the ring smoothly and do not pull on the links, as their tension is essential for the demonstration. The spheres may constitute small parts: keep out of reach of children under 3 years old; adult supervision is required for younger users.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-gift\"\u003e\n\n\u003ch3\u003eTo equip a classroom or please an engineer\u003c\/h3\u003e\n\n\u003cp\u003eThis demonstrator is primarily intended for \u003cstrong\u003ephysics teachers\u003c\/strong\u003e, schools, and science clubs that want a striking collective demonstration. It also makes an original gift for a structural engineer, an architect, or a mechanics student, who will gladly display it in their office.\u003c\/p\u003e\n\n\u003cp\u003eTo complete the collection, browse our \u003ca href=\"\/collections\/objets-scientifiques\"\u003eLab scientific objects\u003c\/a\u003e or the puzzles in our \u003ca href=\"\/collections\/casse-tetes-et-bureau\"\u003epuzzles and office\u003c\/a\u003e selection.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eFrequently asked questions\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-faq\"\u003e\n\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat exactly does this device demonstrate?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eIt illustrates the \u003cstrong\u003ecomposition and decomposition of forces\u003c\/strong\u003e, as well as the equilibrium condition of a stationary object. Each green sphere is subject to its own weight and the tension of the links holding it. These forces have different directions, clearly materialized by the links, and their vector sum is zero since the sphere does not move. The demonstrator thus allows for a concrete visualization of the \u003cstrong\u003eparallelogram rule\u003c\/strong\u003e and the notion of resultant. By tilting the ring, you change the directions of the forces and observe how a new equilibrium is established, which significantly enriches classroom discussion.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat are its dimensions?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe demonstrator measures \u003cstrong\u003e505 mm high\u003c\/strong\u003e, \u003cstrong\u003e480 mm wide\u003c\/strong\u003e, and \u003cstrong\u003e150 mm deep\u003c\/strong\u003e. This large format is intentional: it allows an entire class to follow the demonstration from their seats without having to gather around the desk. Provide a stable table at least fifty centimeters wide, with a bit of space around the ring to allow it to tilt without hitting other objects. The manufacturer does not provide the weight of the device. However, its shallow depth makes it easy to store on a shelf between sessions.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat is the tilting ring for?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe ring can change orientation, which modifies the \u003cstrong\u003eangles between the links\u003c\/strong\u003e and the direction of the weight relative to them. The result: the spheres adopt a new equilibrium position and the distribution of tensions changes. This feature allows for the comparison of multiple configurations with a single device and shows that the same weight can require very different tensions depending on the inclination of the links. It is an excellent way to introduce a often counter-intuitive concept: the closer a cable is to the horizontal, the more \u003cstrong\u003etension\u003c\/strong\u003e it must have to carry a load. The manufacturer does not specify the exact range of the tilt.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eCan forces be measured with this demonstrator?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThis demonstrator is primarily \u003cstrong\u003equalitative\u003c\/strong\u003e: it makes the directions of forces and the state of equilibrium visible, but it is not delivered with any dynamometers or calibrated weights according to the manufacturer. However, it is very well suited for \u003cstrong\u003esemi-quantitative\u003c\/strong\u003e work: by photographing the device from the front, one can measure the angles of the links with a protractor, then construct the force parallelograms to scale based on the weight of a sphere. Students can then compare the relative tensions of the different links. For direct intensity measurements, it is usefully supplemented by a force table with dynamometers.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eFor which level of education is it suitable?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eIt covers a wide spectrum. In \u003cstrong\u003emiddle school\u003c\/strong\u003e, it helps students understand that a stationary object is subject to forces that cancel each other out. In \u003cstrong\u003ehigh school\u003c\/strong\u003e, it illustrates the vector representation of forces, vector sums, and the principle of inertia. In \u003cstrong\u003ehigher education\u003c\/strong\u003e, particularly in civil engineering or mechanics, it serves as a visual introduction to statics and structural calculation. Its large format makes it above all a tool for collective demonstration, handled by the teacher in front of the class. It also finds a place in a science museum or a science outreach space.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eDoes the demonstrator require any adjustment?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe manufacturer does not provide a detailed manual on link adjustment or the state of delivery, and we prefer not to claim anything we cannot guarantee. Based on the photos, the device is delivered as a set ready for demonstration, with the \u003cstrong\u003ethree spheres already suspended\u003c\/strong\u003e by their links. Before each session, simply check that the links are taut and that none are tangled, then ensure the \u003cstrong\u003estand\u003c\/strong\u003e is resting flat. If any assembly point seems uncertain upon receipt, contact us: we will transmit any additional information available.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eHow should it be maintained and stored?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eMaintenance is simple. Dust the \u003cstrong\u003emetal ring\u003c\/strong\u003e and the stand with a soft, dry cloth, without abrasive products. Avoid pulling on the links or twisting them: their tension and position are essential for the demonstration. For transport from one room to another, hold the device by the stand rather than the ring. Between uses, store it upright on a shelf or in a cupboard, away from shocks; its \u003cstrong\u003edepth of 15 cm\u003c\/strong\u003e facilitates storage. A cover or a simple cloth will effectively protect it from dust.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atelier Atypique","offers":[{"title":"Default Title","offer_id":54860800786755,"sku":"1005011743325146-CN","price":199.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/S17bfe70810164a388a814a3f9a326fbdA.webp?v=1791061009"},{"product_id":"celestial-orbit-pendulum-perpetual-motion-machine-kinetic-art-desk-decor-astronomy-model-for-home-office-rotating-sculpture","title":"Golden celestial orbit kinetic desk sculpture - ASTRALIS","description":"\u003cstyle\u003e\n.aa{font-family:Georgia,'Times New Roman',serif;color:#1A1A1A;line-height:1.7;font-size:15px;max-width:760px;margin:0 auto}\n.aa p{margin:0 0 1rem}\n.aa a{color:#185FA5;text-decoration:underline}\n.aa .aa-title{display:inline-block;border-bottom:2px solid 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h3{color:#5C3A1E;font-size:16px;margin:0 0 .6rem}\n.aa .aa-gift p{font-size:14px}\n.aa .aa-faq{margin:1rem 0 1.5rem}\n.aa details.aa-q{border-bottom:1px solid #ebe5d6;padding:.85rem 0}\n.aa details.aa-q summary{font-size:14px;font-weight:700;list-style:none;padding-right:20px;position:relative;cursor:pointer}\n.aa details.aa-q summary::-webkit-details-marker{display:none}\n.aa details.aa-q summary::after{content:\"+\";position:absolute;right:0;top:0;color:#FAC775;font-size:18px;line-height:1}\n.aa details.aa-q[open] summary::after{content:\"\\2212\"}\n.aa .aa-a{font-size:13px;color:#3a3a3a;margin-top:.5rem}\n.aa .aa-a p{margin:0 0 .5rem}\n@media(max-width:600px){.aa .aa-vars,.aa .aa-ben{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\u003cdiv class=\"aa\"\u003e\n\n\u003cp\u003e\u003cspan class=\"aa-badge aa-badge-noir\"\u003eThe Lab\u003c\/span\u003e \u003cspan class=\"aa-badge aa-badge-or\"\u003eGold finish\u003c\/span\u003e A flick of your fingertips, and a small universe begins to turn. This \u003cstrong\u003ekinetic desk sculpture\u003c\/strong\u003e evokes the armillary spheres and orreries of astronomers past, reinterpreted in a resolutely decorative language. On a \u003cstrong\u003egold rectangular base\u003c\/strong\u003e, two \u003cstrong\u003ecurved uprights\u003c\/strong\u003e support a set of \u003cstrong\u003econcentric rings\u003c\/strong\u003e, each pivoting on its axis like interlaced orbits. \u003cstrong\u003eGold spheres\u003c\/strong\u003e punctuate their path, while at the center of the ensemble shines a \u003cstrong\u003etranslucent green central sphere\u003c\/strong\u003e, enhanced by small beads of the same green. Set in motion by hand, the rings rotate, intersect, and shift in a ballet that slowly decelerates before coming to a stop in a new configuration. Standing approximately 22.5 cm tall and made entirely of \u003cstrong\u003egold-finish metal\u003c\/strong\u003e, it naturally finds its place on an executive desk, a bookshelf, or an entryway console. An \u003cstrong\u003eobject for contemplation\u003c\/strong\u003e for those who love to look up at the sky, even in the middle of a workday.\u003c\/p\u003e\n\n\u003ch3 class=\"aa-title\"\u003eThe finish\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-vars\"\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v light\" style=\"background: #C8A84B;\"\u003eGOLD\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eGold\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eGold-finish metal, translucent green central sphere and beads\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v dark\" style=\"background: linear-gradient(135deg,#C8A84B 0%,#2E6B3F 100%);\"\u003eGOLD AND GREEN\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eSculpture accents\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eGold orbits and spheres around a translucent green core\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-mat\"\u003e\n\n\u003ch3\u003eFrom armillary sphere to orrery\u003c\/h3\u003e\n\n\u003cp\u003eSince antiquity, astronomers have represented the sky using nested circles. The \u003cstrong\u003earmillary sphere\u003c\/strong\u003e, from the Latin \u003cem\u003earmilla\u003c\/em\u003e (bracelet), assembles rings representing the celestial equator, the ecliptic, and the meridians around a central point. The 18th century saw the appearance of mechanical \u003cstrong\u003eorreries\u003c\/strong\u003e, which rotate small spheres representing the planets around a central Sun, making the system envisioned by Copernicus visible.\u003c\/p\u003e\n\n\u003cp\u003eThis sculpture borrows from both traditions without claiming astronomical accuracy: its concentric rings pivot freely and create ever-changing figures. The movement relies on \u003cstrong\u003erotational inertia\u003c\/strong\u003e: once started, each ring maintains its momentum until friction on its axis gradually stops it. No object can rotate indefinitely without an external energy source; it is precisely this slow, almost solemn deceleration that makes the spectacle so soothing.\u003c\/p\u003e\n\n\u003cp\u003eEach ring has its own axis and mass: when started together, they do not rotate at the same speed. Some stop sooner, while others continue their course, composing a shifting choreography where the \u003cstrong\u003eorbits\u003c\/strong\u003e seem to catch up and then drift apart, much like planets with differing periods of revolution.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eWhy you will love it\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-ben\"\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eHypnotic movement\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe rings cross and shift at different rhythms: no two spins are ever the same.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eAncient instrument allure\u003c\/span\u003e\u003cspan class=\"ds\"\u003eOrbits, spheres, and curved uprights recall the armillary spheres of old astronomy cabinets.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e➤\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eLuminous gold finish\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe gold metal catches the light and instantly warms up a desk or shelf.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eAn intriguing green core\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe translucent green central sphere and its small beads add an unexpected note of color.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eAnti-stress break\u003c\/span\u003e\u003cspan class=\"ds\"\u003eSpinning the rings and watching them slow down offers a few seconds of breathing room between tasks.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e➤\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eNo batteries or cables\u003c\/span\u003e\u003cspan class=\"ds\"\u003eA simple manual flick is enough: the object remains silent and autonomous, wherever it is placed.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-des\"\u003e\n\n\u003cp class=\"t\"\u003eA miniature sky on your desk\u003c\/p\u003e\n\n\u003cdiv class=\"x\"\u003e\n\n\u003cp\u003eThere is something profoundly soothing about watching orbits turn. Renaissance astronomers spent nights observing the path of the planets; clockmakers of the Enlightenment dedicated years to reproducing them in brass. This sculpture captures that spirit in a freer form: here, there are no revolution calculations, only the pleasure of \u003cstrong\u003egold curves\u003c\/strong\u003e intersecting.\u003c\/p\u003e\n\n\u003cp\u003ePlaced on a desk, it becomes a ritual. You spin it while picking up the phone, watch it while deep in thought, or spin it again for an intrigued visitor. Its rings always end up stopping in a new position, like a celestial map of a fleeting moment. The \u003cstrong\u003egreen sphere\u003c\/strong\u003e at the center, like a distant planet, catches the eye. It is an object that reminds us, in the heart of daily life, that the entire universe is made of \u003cstrong\u003emovement\u003c\/strong\u003e.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-steps\"\u003e\n\n\u003ch4\u003eSetting the orbits in motion\u003c\/h4\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e1\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eChoose a stable location.\u003c\/strong\u003e Place the sculpture on a flat surface, away from drafts and far from the edge of the desk, leaving space around the rings.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e2\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eLaunch gently.\u003c\/strong\u003e Give one of the rings a light flick with the tip of your finger in the direction of its rotation. A measured gesture is enough: no need to force it.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e3\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eCombine the orbits.\u003c\/strong\u003e Then spin a second ring, in the same or opposite direction, to achieve more complex intersections and figures.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e4\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eObserve and relaunch.\u003c\/strong\u003e Let the rings slow down and freeze in a new configuration, then spin them again at your own pace for a new ballet.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eComparison\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-cmp\"\u003e\n\n\u003ctable\u003e\n\n\u003cthead\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCriterion\u003c\/th\u003e\n\n\u003cth\u003eCelestial Orbit Sculpture\u003c\/th\u003e\n\n\u003cth\u003eClassic Armillary Sphere\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003ePurpose\u003c\/td\u003e\n\n\u003ctd\u003eDecorative kinetic object\u003c\/td\u003e\n\n\u003ctd\u003eSky representation instrument\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eMovement\u003c\/td\u003e\n\n\u003ctd\u003eManually spun rotating rings\u003c\/td\u003e\n\n\u003ctd\u003eGenerally fixed or whole-unit rotation\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eAstronomical accuracy\u003c\/td\u003e\n\n\u003ctd\u003eFree interpretation\u003c\/td\u003e\n\n\u003ctd\u003eLabeled celestial circles\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eFinish\u003c\/td\u003e\n\n\u003ctd\u003eGold metal, translucent green accents\u003c\/td\u003e\n\n\u003ctd\u003eOften brass or wood\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eHeight\u003c\/td\u003e\n\n\u003ctd\u003e≈ 22.5 cm\u003c\/td\u003e\n\n\u003ctd\u003eVaries by model\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eIdeal usage\u003c\/td\u003e\n\n\u003ctd\u003eDesk, contemplative break, gift\u003c\/td\u003e\n\n\u003ctd\u003eBookshelf, collection\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cp\u003eFor other items inspired by the sky, explore our \u003ca href=\"\/collections\/astronomie-et-cartographie\"\u003eastronomy and cartography\u003c\/a\u003e universe, or discover our kinetic objects in \u003ca href=\"\/collections\/physique-et-mouvement\"\u003ephysics and movement\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv class=\"aa-info\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eGood to know:\u003c\/strong\u003e rotation is sustained by the \u003cstrong\u003emomentum\u003c\/strong\u003e you give the rings. As with any mechanical object, friction eventually stops it: the duration of rotation depends on the force of the launch and the position of the rings. The indicated dimensions are read from photos and remain approximate.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-tip\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e place the sculpture near a natural light source or a warm lamp: the gold finish and translucent green sphere become more vibrant, and the moving reflections multiply the hypnotic effect as the rings rotate.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eTechnical specifications\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-sp\"\u003e\n\n\u003ctable\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eType\u003c\/td\u003e\n\n\u003ctd\u003eKinetic desk sculpture\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eInspiration\u003c\/td\u003e\n\n\u003ctd\u003eArmillary sphere, orrery\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\n\u003ctd\u003eGold-finish metal (based on photos)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eFinish\u003c\/td\u003e\n\n\u003ctd\u003eGold\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eMoving parts\u003c\/td\u003e\n\n\u003ctd\u003eMultiple concentric pivoting rings\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eSpheres\u003c\/td\u003e\n\n\u003ctd\u003eGold spheres, translucent green central sphere, small green beads\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eSupport\u003c\/td\u003e\n\n\u003ctd\u003eGold rectangular base, two curved uprights\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eHeight\u003c\/td\u003e\n\n\u003ctd\u003e≈ 22.5 cm (photo reading)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eWidth\u003c\/td\u003e\n\n\u003ctd\u003e≈ 22.9 cm (photo reading)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eBase\u003c\/td\u003e\n\n\u003ctd\u003e≈ 5.6 cm depth, ≈ 3.2 cm height (photo reading)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eActivation\u003c\/td\u003e\n\n\u003ctd\u003eManual, no batteries or power source\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eWeight\u003c\/td\u003e\n\n\u003ctd\u003eNot disclosed\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-warn\"\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrecautions:\u003c\/strong\u003e the \u003cstrong\u003esmall beads\u003c\/strong\u003e and spheres are small parts: keep the sculpture out of reach of children under 3 years old. Do not force the rings and do not spin them at high speed: an overly abrupt movement can misalign an axis. Do not lift the object by its orbits; lift it by the base.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-gift\"\u003e\n\n\u003ch3\u003eA dream-worthy gift idea\u003c\/h3\u003e\n\n\u003cp\u003eFor an \u003cstrong\u003eastronomy enthusiast\u003c\/strong\u003e, an executive who loves beautiful desk objects, an architect, a teacher, or a friend who always has their head in the stars, this sculpture is an elegant gift. It stylishly marks a promotion, a departure, a birthday, or a move into a new office.\u003c\/p\u003e\n\n\u003cp\u003eIt also pairs nicely with Father's Day, a birthday for a space lover, or an engineering graduation: a gift that is kept for years on a desk, far from easily forgotten items. Its slow movement invites the recipient to take a moment, and its ancient instrument look makes it fit naturally into both classic and contemporary decor.\u003c\/p\u003e\n\n\u003cp\u003eTo create a complete gift, pair it with another piece from our \u003ca href=\"\/collections\/objets-scientifiques\"\u003escientific objects from The Lab\u003c\/a\u003e.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-faq\"\u003e\n\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eDoes the sculpture rotate indefinitely?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eNo, and no object can: movement without an energy source always ends up stopping due to friction. Despite certain commercial names, this is \u003cstrong\u003enot a perpetual motion machine\u003c\/strong\u003e. The rings spin thanks to the \u003cstrong\u003emomentum\u003c\/strong\u003e you give them, then gradually slow down before coming to a stop. The duration of rotation depends on the force of the spin and the ring chosen. It is precisely this gradual slowing, and the new configuration that results each time, that makes the sculpture so charming. A new flick is all that is needed to restart the ballet of the orbits.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eDoes it require batteries or power?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eNo. The sculpture features \u003cstrong\u003eno motor, no batteries, and no cables\u003c\/strong\u003e: it is animated solely by hand. A light flick on a ring is enough to set it in motion, and you can spin several to multiply the intersections. This complete autonomy is a real advantage for a desk: no wires to hide, no motor noise, and no recharging required. It can be placed anywhere—a desk, living room, or library—and remains ready to spin at any moment to accompany a thought or intrigue a visitor.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat are its dimensions?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eBased on the measurements visible in the manufacturer's photos, the sculpture is approximately \u003cstrong\u003e22.5 cm high\u003c\/strong\u003e by \u003cstrong\u003e22.9 cm wide\u003c\/strong\u003e. Its rectangular base is approximately 5.6 cm deep and 3.2 cm high. These are \u003cstrong\u003eapproximate readings\u003c\/strong\u003e and may vary slightly. This size makes it a desk object that is visible without being intrusive; it fits well next to a monitor, on a library shelf, or on an entryway console. Just plan for a little space around the rings so they can rotate freely without bumping into other objects.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat material is it made of?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eBased on the photos, the structure, base, uprights, and rings are made of \u003cstrong\u003egold-finish metal\u003c\/strong\u003e. In the center, a \u003cstrong\u003etranslucent green sphere\u003c\/strong\u003e and small green beads add a touch of color; the manufacturer does not specify their exact material. We do not provide specific composition or alloy information due to lack of reliable data. The gold finish gives the object its ancient instrument look and catches the light particularly well, especially when the rings are in motion. To preserve it, gentle cleaning with a dry cloth is recommended; do not use abrasive products.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eIs this an accurate astronomical model?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eNo: it is a \u003cstrong\u003edecorative sculpture inspired\u003c\/strong\u003e by armillary spheres and orreries, not a scientific instrument. Its rings do not represent actual planetary orbits and do not respect the proportions or periods of the solar system. However, it adopts their visual vocabulary: \u003cstrong\u003enested circles\u003c\/strong\u003e, suspended spheres, and a central star. This is what makes it a beautiful conversation piece: one can discuss Copernicus, 18th-century clockmakers, or celestial mechanics while enjoying an object that is primarily aesthetic and soothing to watch.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eHow do I maintain it?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eRegular, gentle maintenance is enough. Dust the sculpture with a \u003cstrong\u003edry microfiber cloth\u003c\/strong\u003e or a soft-bristled brush, which allows you to reach the areas between the rings. Avoid water, household products, and abrasive cleaners, which could tarnish or scratch the \u003cstrong\u003egold finish\u003c\/strong\u003e. Handle the object by its base rather than by the rings so as not to misalign the axes of rotation. If a ring seems to turn less freely, check that no dust is hindering its axis. Kept away from humidity, the sculpture will retain its luster for a long time.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eIs this a good corporate gift?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eAbsolutely. Elegant, timeless, and without a strong personal connotation, the sculpture is suitable as a \u003cstrong\u003ebusiness gift\u003c\/strong\u003e, for retirement, a promotion, or the inauguration of new premises. It appeals just as much to an executive as to an employee who is passionate about science or design. Its \u003cstrong\u003egold finish\u003c\/strong\u003e gives it immediate presence on a desk, and its movement makes it an object that one will gladly interact with during meetings or phone calls. For a more complete present, you can pair it with another object from our scientific or desk selection.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Atelier Atypique","offers":[{"title":"Default Title","offer_id":54860800852291,"sku":"1005010804098140-as show","price":89.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/S3695e1cc2ab84531a64ceeb720d512db1.webp?v=1791060983"},{"product_id":"new-physical-study-aids-centrifugal-force-equipment-school-physical-teaching-equipment-centrifugal-orbit-experiment-aids","title":"Centripetal force demonstrator, desktop looping track - CYCLONE","description":"\u003cstyle\u003e\n.aa{font-family:Georgia,'Times New Roman',serif;color:#1A1A1A;line-height:1.7;font-size:15px;max-width:760px;margin:0 auto}\n.aa p{margin:0 0 1rem}\n.aa a{color:#185FA5;text-decoration:underline}\n.aa 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.aa-gift{background:linear-gradient(135deg,#FFFDF7,#FFF9E8);border:1px solid #FAC775;border-radius:10px;padding:1.3rem 1.5rem;margin:1.5rem 0}\n.aa .aa-gift h3{color:#5C3A1E;font-size:16px;margin:0 0 .6rem}\n.aa .aa-gift p{font-size:14px}\n.aa .aa-faq{margin:1rem 0 1.5rem}\n.aa details.aa-q{border-bottom:1px solid #ebe5d6;padding:.85rem 0}\n.aa details.aa-q summary{font-size:14px;font-weight:700;list-style:none;padding-right:20px;position:relative;cursor:pointer}\n.aa details.aa-q summary::-webkit-details-marker{display:none}\n.aa details.aa-q summary::after{content:\"+\";position:absolute;right:0;top:0;color:#FAC775;font-size:18px;line-height:1}\n.aa details.aa-q[open] summary::after{content:\"\\2212\"}\n.aa .aa-a{font-size:13px;color:#3a3a3a;margin-top:.5rem}\n.aa .aa-a p{margin:0 0 .5rem}\n@media(max-width:600px){.aa .aa-vars,.aa .aa-ben{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\u003cdiv class=\"aa\"\u003e\n\n\u003cp\u003e\u003cspan class=\"aa-badge aa-badge-noir\"\u003eThe Lab\u003c\/span\u003e \u003cspan class=\"aa-badge aa-brun\"\u003eWooden base\u003c\/span\u003e A marble released at the top of a slope, a moment of suspense, then it climbs, goes upside down at the top of a vertical circle, and comes back down without ever falling. This \u003cstrong\u003ecentripetal force demonstrator\u003c\/strong\u003e reenacts the founding experience of roller coasters right on your desk. Its silhouette consists of a single gesture: a \u003cstrong\u003epolished metal rail\u003c\/strong\u003e descending a slope, curling into a \u003cstrong\u003eunique vertical loop\u003c\/strong\u003e, and then shooting toward a small black cap at the end of the course. The whole rests on a \u003cstrong\u003edark wooden rectangular base\u003c\/strong\u003e that gives it the look of an instrument from a cabinet of curiosities. Originally designed as \u003cstrong\u003eeducational physics equipment\u003c\/strong\u003e, it speaks as much to the high schooler discovering \u003cstrong\u003ecircular dynamics\u003c\/strong\u003e as it does to the nostalgic engineer or the simply curious. Each launch poses the same question: why doesn't the marble fall when it is upside down? The answer lies in \u003cstrong\u003espeed\u003c\/strong\u003e, \u003cstrong\u003ecurvature\u003c\/strong\u003e, and a handful of elegant equations that the object suddenly makes tangible. A \u003cstrong\u003edemonstrative desk object\u003c\/strong\u003e, sober and expressive, that turns a Newton's law into a spectacle of a few seconds.\u003c\/p\u003e\n\n\u003ch3 class=\"aa-title\"\u003eThe model\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-vars\"\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v dark\" style=\"background: linear-gradient(135deg,#5C3A1E 0%,#704028 40%,#5C3A1E 70%,#8B5E2A 100%);\"\u003eUNIQUE LOOP\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eUnique model — one loop\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003ePolished metal rail, metal marble, dark wood base\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-mat\"\u003e\n\n\u003ch3\u003eCentripetal force, or the art of turning without falling\u003c\/h3\u003e\n\n\u003cp\u003eAny object in motion tends to continue its path in a straight line: this is the \u003cstrong\u003eprinciple of inertia\u003c\/strong\u003e, formulated by Newton in 1687. For a marble to trace a circle, a force must constantly pull it toward the center: this is the \u003cstrong\u003ecentripetal force\u003c\/strong\u003e, from the Latin \u003cem\u003ecentrum\u003c\/em\u003e (center) and \u003cem\u003epetere\u003c\/em\u003e (to seek). In the loop, this role is played by the rail itself, which pushes the marble inward, aided at the top by gravity. What one feels on a ride as a push toward the outside, the famous \"centrifugal force,\" is merely the manifestation of this inertia seen from the passenger's seat.\u003c\/p\u003e\n\n\u003cp\u003eAt the highest point, the marble only stays pressed against the rail if it is going fast enough: the square of its speed must exceed the product of gravity and the radius of the loop (\u003cstrong\u003ev² ≥ g·R\u003c\/strong\u003e). Below this threshold, the rail stops holding it, and it drops. As early as the 1840s, attractions called \"centrifugal railways\" thrilled the Parisian public with this same principle; the loops of modern amusement parks are their direct heirs.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eWhy you'll love it\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-ben\"\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eA law made visible\u003c\/span\u003e\u003cspan class=\"ds\"\u003eCentripetal force ceases to be a formula on the blackboard: it can be seen, replayed, and discussed in a few seconds.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eLook of an antique instrument\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe polished metal that catches the light and the dark wood of the base compose an object worthy of a library or an engineer's study.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e➤\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eOne loop, zero distractions\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe path can be read at a glance: a slope, a circle, an exit. Ideal for focusing attention on the essentials.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eNo power supply\u003c\/span\u003e\u003cspan class=\"ds\"\u003eOnly gravity sets the marble in motion: no batteries, no cables, nothing to recharge.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eReady-to-use lesson support\u003c\/span\u003e\u003cspan class=\"ds\"\u003eTeachers, parents, and science communicators have a ready-to-use demonstration for talking about inertia and energy.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e➤\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eA curiosity magnet\u003c\/span\u003e\u003cspan class=\"ds\"\u003ePlaced on a desk, it draws the hands of visitors and starts conversations better than any paperweight.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-des brun\"\u003e\n\n\u003cp class=\"t\"\u003eFrom the fairground ride to the engineer’s desk\u003c\/p\u003e\n\n\u003cdiv class=\"x\"\u003e\n\n\u003cp\u003eThere is an almost childlike pleasure in watching a marble defy the fall. 19th-century fairground showmen understood this by installing their first looping circuits, where intrepid passengers went upside down to the cheers of the crowd. Physicists saw in it an ideal demonstration of the link between \u003cstrong\u003espeed\u003c\/strong\u003e, \u003cstrong\u003eradius of curvature\u003c\/strong\u003e, and \u003cstrong\u003egravity\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThis demonstrator takes up this dual lineage. Its unique, clean, and legible loop recalls the engraved plates of mechanics treatises; its dark wood base evokes the demonstration instruments of old science classrooms. On a desk, it becomes a ritual: one releases the marble, holds one's breath, watches it go upside down and return. A little theater of \u003cstrong\u003eNewtonian mechanics\u003c\/strong\u003e, replayed at will, reminding us that the laws of nature are as beautiful as they are exact.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-steps\"\u003e\n\n\u003ch4\u003eStaging the loop in four steps\u003c\/h4\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e1\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eChoose the location.\u003c\/strong\u003e Place the base on a perfectly flat and stable surface: an inclined or wobbly table alters the trajectory and may prevent the marble from completing its loop.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e2\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003ePosition the marble at the start.\u003c\/strong\u003e Place the metal marble at the very top of the slope, immobile, holding it with your fingertip.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e3\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eRelease without pushing.\u003c\/strong\u003e Simply open your finger: gravity is enough. A push would distort the experiment by adding initial velocity.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e4\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eObserve and vary.\u003c\/strong\u003e Follow the marble through the loop and then to the black cap. Repeat by releasing it lower down the slope to discover the point at which it no longer clears the summit.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eComparison\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-cmp\"\u003e\n\n\u003ctable\u003e\n\n\u003cthead\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCriteria\u003c\/th\u003e\n\n\u003cth\u003eThis model (one loop)\u003c\/th\u003e\n\n\u003cth\u003eSingle or double loop rail\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eNumber of loops\u003c\/td\u003e\n\n\u003ctd\u003eOne, vertical\u003c\/td\u003e\n\n\u003ctd\u003eOne or two depending on version\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eRail\u003c\/td\u003e\n\n\u003ctd\u003eMetal, polished steel appearance\u003c\/td\u003e\n\n\u003ctd\u003eV-profile aluminum\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eBase\u003c\/td\u003e\n\n\u003ctd\u003eRectangular dark wood\u003c\/td\u003e\n\n\u003ctd\u003eWood, length ≈ 40 cm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eMarble(s)\u003c\/td\u003e\n\n\u003ctd\u003eMetal marble shown\u003c\/td\u003e\n\n\u003ctd\u003eSteel marble and 2.5 cm plastic marble\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eEnd of course\u003c\/td\u003e\n\n\u003ctd\u003eSmall black cap\u003c\/td\u003e\n\n\u003ctd\u003eMarble catch net\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\n\u003ctd\u003eNot provided\u003c\/td\u003e\n\n\u003ctd\u003eLoop radius ≈ 7 cm (and ≈ 3.5 cm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eIdeal usage\u003c\/td\u003e\n\n\u003ctd\u003eDemonstrative desk object\u003c\/td\u003e\n\n\u003ctd\u003eComparative experiments in class\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cp\u003eBoth demonstrators tell the same physics story with different temperaments: this one focuses on the legibility of a single loop, the other on experimentation. To compose a real science corner, browse all of our \u003ca href=\"\/collections\/objets-scientifiques\"\u003escientific objects from The Lab\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv class=\"aa-info\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eGood to know:\u003c\/strong\u003e this demonstrator is sourced from \u003cstrong\u003ephysics teaching equipment\u003c\/strong\u003e. Its exact dimensions and weight are not provided by the manufacturer; this sheet sticks to what the product photo shows: a single-loop rail on a dark wood base, presented with a metal marble.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-tip\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e before each demonstration, wipe the rail and the marble with a dry microfiber cloth. A fingerprint or a grain of dust is enough to slow the marble down and make it miss the summit. A small spirit level placed on the base ensures perfect horizontality.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eTechnical characteristics\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-sp\"\u003e\n\n\u003ctable\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eType\u003c\/td\u003e\n\n\u003ctd\u003eCentripetal force demonstrator (looping rail)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eNumber of loops\u003c\/td\u003e\n\n\u003ctd\u003eOne vertical loop\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eRail\u003c\/td\u003e\n\n\u003ctd\u003eMetal, shiny polished steel appearance\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eMarble\u003c\/td\u003e\n\n\u003ctd\u003eMetal (shown in product photo)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eBase\u003c\/td\u003e\n\n\u003ctd\u003eDark wood, rectangular shape\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eEnd of course\u003c\/td\u003e\n\n\u003ctd\u003eSmall black cap at the end of the rail\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eOperation\u003c\/td\u003e\n\n\u003ctd\u003eGravity only, no power source\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eConcepts illustrated\u003c\/td\u003e\n\n\u003ctd\u003eInertia, centripetal force, potential and kinetic energy\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eUsage\u003c\/td\u003e\n\n\u003ctd\u003eClassroom demonstration, desk object\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\n\u003ctd\u003eNot provided\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eWeight\u003c\/td\u003e\n\n\u003ctd\u003eNot provided\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eDelivery assembled or in kit\u003c\/td\u003e\n\n\u003ctd\u003eNot provided\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-warn\"\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrecautions:\u003c\/strong\u003e the marble is a \u003cstrong\u003esmall part\u003c\/strong\u003e that can be swallowed: this demonstrator is not suitable for children under 3 years old and should be used under adult supervision with younger ones. Do not force the rail: a deformed loop will no longer guide the marble correctly. Do not throw the marble by hand off the path.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-gift\"\u003e\n\n\u003ch3\u003eA gift idea that goes full circle\u003c\/h3\u003e\n\n\u003cp\u003eFor a \u003cstrong\u003ephysics teacher\u003c\/strong\u003e at the end of the school year, an engineering student, a mechanics enthusiast, or a colleague who has everything, this demonstrator is a gift that gets noticed and shared. It also accompanies a retirement, a new desk, or a baccalaureate success with a touch of scholarly humor.\u003c\/p\u003e\n\n\u003cp\u003eTo extend the pleasure, pair it with a puzzle or an intriguing desk object from our \u003ca href=\"\/collections\/casse-tetes-et-bureau\"\u003epuzzles and desk objects\u003c\/a\u003e collection, or explore the other \u003ca href=\"\/collections\/physique-et-mouvement\"\u003ephysics and movement\u003c\/a\u003e experiments from The Lab.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-faq\"\u003e\n\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhy doesn't the marble fall at the top of the loop?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eBecause it's going fast enough. At the summit, the marble needs a \u003cstrong\u003eforce directed toward the center\u003c\/strong\u003e to continue turning. As long as its speed is sufficient, gravity alone is not enough to provide this force: the rail must still push it inward, which keeps it pressed against it. If the speed drops below the threshold defined by \u003cstrong\u003ev² = g·R\u003c\/strong\u003e, gravity becomes \"too strong\" for the circular trajectory and the marble leaves the rail. This is exactly what ensures passenger safety in an amusement park loop: the entry speed is calculated with a large margin.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eDoes it need batteries or an electrical power supply?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eNo. The demonstrator works \u003cstrong\u003esolely thanks to gravity\u003c\/strong\u003e. The energy the marble needs to travel through the loop is provided by the starting height: by descending the slope, it converts its potential energy into speed, then spends part of this speed to climb back to the top of the circle. No motor, no battery, no cable is involved. This is precisely what makes the experiment so expressive: everything observed stems from the initial height, the shape of the rail, and friction. Simply place the object on a flat surface to be ready for use, at any time.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat is the difference with The Lab’s single or double looping rail?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eBoth objects illustrate \u003cstrong\u003ecentripetal force\u003c\/strong\u003e, but they are not aimed at the same use. This model focuses on \u003cstrong\u003ea single loop\u003c\/strong\u003e: its path can be understood at a glance, making it a demonstrative desk object and an excellent starting point for a discussion. The other demonstrator, more laboratory-oriented, offers a version with two loops of different radii, two marbles of different materials, and a catch net, to multiply comparative trials. If you are looking for a sober object to display and have people try, this one is ideal; for a complete practical session, the other will be richer.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat happens if the marble doesn't clear the loop?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThat is an experiment in itself. If the marble is released too low on the slope, it does not accumulate enough speed: it climbs into the loop, slows down, then \u003cstrong\u003edrops before the summit\u003c\/strong\u003e and falls back. In theory, for a marble that slides without friction, you would need to start from a height at least equal to \u003cstrong\u003etwo and a half times the radius\u003c\/strong\u003e of the loop; a marble that rolls must start a little higher, because part of its energy is used to make it spin on itself. Also, check that the base is perfectly horizontal and that the rail is clean: dust or a slight tilt is enough to make a pass fail.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eCan it be used in class or with children?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eYes, that is its primary vocation: it is \u003cstrong\u003ephysics teaching equipment\u003c\/strong\u003e. In middle school, it simply illustrates the conversion between height and speed; in high school and higher education, it allows for approaching \u003cstrong\u003eNewton's second law in circular motion\u003c\/strong\u003e, the concept of support reaction, and the condition for clearing the summit. With young children, the object is fascinating, but it must remain under adult supervision: the marble is a small part that can be swallowed, and the demonstrator is not suitable for those under 3. For older ones, it is a great starting point for asking questions and formulating hypotheses.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat are the dimensions of the demonstrator?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe manufacturer \u003cstrong\u003edoes not provide dimensions or weight\u003c\/strong\u003e for this model, and we prefer not to offer approximate figures. The product photo shows a set composed of a slope, a single vertical loop, and an exit rail fixed to a \u003cstrong\u003erectangular dark wood base\u003c\/strong\u003e, with a metal marble and a small black cap at the end of the course. If space is a deciding factor for you, for example for a specific shelf or display case, write to us before your order: we will provide any additional information we have on this object.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eHow do I maintain the rail and the marble?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eMaintenance is minimal. Regularly dust the rail with a \u003cstrong\u003edry microfiber cloth\u003c\/strong\u003e, following the entire length of the loop, and wipe the marble in the same way: fingerprints and dust create friction that slows the marble down. Avoid aggressive household products and water on the \u003cstrong\u003ewooden base\u003c\/strong\u003e, which could stain or swell. Keep the marble near the object, in a small dish for example, so as not to lose it. Finally, handle the demonstrator by the base rather than the loop: it is the precise geometry of the rail that ensures successful passes.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atelier Atypique","offers":[{"title":"Default Title","offer_id":54860801474883,"sku":"1005009392089083-Default Title","price":119.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/Sf719fd3c457d47dda14a9827b529f1a3X.webp?v=1791060883"},{"product_id":"stirling-engine-model-hot-air-motor-model-physics-twin-engine-generator-model-with-led-light-flywheel-science-experiment-toy","title":"Twin-cylinder Stirling engine with generator and LED - CASTOR","description":"\u003cstyle\u003e\n.aa{font-family:Georgia,'Times New Roman',serif;color:#1A1A1A;line-height:1.7;font-size:15px;max-width:760px;margin:0 auto}\n.aa p{margin:0 0 1rem}\n.aa a{color:#185FA5;text-decoration:underline}\n.aa 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.aa-gift{background:linear-gradient(135deg,#FFFDF7,#FFF9E8);border:1px solid #FAC775;border-radius:10px;padding:1.3rem 1.5rem;margin:1.5rem 0}\n.aa .aa-gift h3{color:#5C3A1E;font-size:16px;margin:0 0 .6rem}\n.aa .aa-gift p{font-size:14px}\n.aa .aa-faq{margin:1rem 0 1.5rem}\n.aa details.aa-q{border-bottom:1px solid #ebe5d6;padding:.85rem 0}\n.aa details.aa-q summary{font-size:14px;font-weight:700;list-style:none;padding-right:20px;position:relative;cursor:pointer}\n.aa details.aa-q summary::-webkit-details-marker{display:none}\n.aa details.aa-q summary::after{content:\"+\";position:absolute;right:0;top:0;color:#FAC775;font-size:18px;line-height:1}\n.aa details.aa-q[open] summary::after{content:\"\\2212\"}\n.aa .aa-a{font-size:13px;color:#3a3a3a;margin-top:.5rem}\n.aa .aa-a p{margin:0 0 .5rem}\n@media(max-width:600px){.aa .aa-vars,.aa .aa-ben{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\u003cdiv class=\"aa\"\u003e\n\n\u003cp\u003e\u003cspan class=\"aa-badge aa-badge-noir\"\u003eHot air engine\u003c\/span\u003e \u003cspan class=\"aa-badge aa-badge-brun\"\u003eWooden base\u003c\/span\u003e Two cylinders, a flame, and the mechanics awaken. This \u003cstrong\u003etwin-cylinder Stirling engine\u003c\/strong\u003e is a true \u003cstrong\u003ehot air engine\u003c\/strong\u003e in miniature: heated by two glass \u003cstrong\u003ealcohol lamps\u003c\/strong\u003e, its \u003cstrong\u003ehorizontal cylinders\u003c\/strong\u003e set a rocker, connecting rods, and a red spoked \u003cstrong\u003eflywheel\u003c\/strong\u003e in motion. This movement in turn drives a small \u003cstrong\u003egenerator\u003c\/strong\u003e that lights an \u003cstrong\u003eLED\u003c\/strong\u003e: in a few moments, heat becomes movement, then electricity, right before your eyes. Mounted on a \u003cstrong\u003elight wood base\u003c\/strong\u003e, the assembly combines the precision of \u003cstrong\u003emetallic\u003c\/strong\u003e parts with the charm of a scientific cabinet object. Two finishes are available, silver or brass-style gold, at 1:12 scale according to the manufacturer. Recommended for ages 14 and up, this model is aimed at mechanical enthusiasts, teachers, engineers, and anyone who loves to see physics in action, whether on a desk or a bookshelf.\u003c\/p\u003e\n\n\u003ch3 class=\"aa-title\"\u003eAvailable finishes\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-vars\"\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v light\" style=\"background: #9A9A9A;\"\u003eSILVER\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eSilver\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eSilver-colored cylinders and mechanical parts, red flywheel, light wood base\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v light\" style=\"background: #C8A84B;\"\u003eGOLD\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eGold\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eBrass-style gold finish mechanical parts, red flywheel, light wood base\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-mat\"\u003e\n\n\u003ch3\u003eThe Stirling cycle: when heat becomes movement\u003c\/h3\u003e\n\n\u003cp\u003eInvented in 1816 by the Scottish clergyman \u003cstrong\u003eRobert Stirling\u003c\/strong\u003e, this engine works without explosions or valves: a fixed volume of gas, in this case air, is trapped in the engine and alternately \u003cstrong\u003eheated and cooled\u003c\/strong\u003e. When heated, the air expands and pushes a piston; when cooled, it contracts and the piston returns. The temperature difference between the hot part, above the flame, and the cold part is enough to maintain continuous movement, transmitted by connecting rods to the \u003cstrong\u003eflywheel\u003c\/strong\u003e, whose momentum regulates the rotation.\u003c\/p\u003e\n\n\u003cp\u003eIn the \u003cstrong\u003etwin-cylinder\u003c\/strong\u003e configuration, the pistons work in an offset manner, making the movement more regular and more spectacular to observe. The Stirling engine is renowned for its quiet operation and its ability to harness almost any heat source; it is currently studied for energy recovery and solar power. The small \u003cstrong\u003egenerator\u003c\/strong\u003e added to this model illustrates the final stage of the chain: thermal energy becomes mechanical, then electrical.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eWhy you will love it\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-ben\"\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eA real heat engine\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThis is no simple model: the flame actually makes the engine turn.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eTwo cylinders in action\u003c\/span\u003e\u003cspan class=\"ds\"\u003ePistons, rods, and rocker arm animate in rhythm for a fascinating mechanical show.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e➤\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eFrom heat to light\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe driven generator lights an LED: the entire energy conversion chain in one object.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eA teaching tool\u003c\/span\u003e\u003cspan class=\"ds\"\u003eIdeal for explaining thermodynamics, gas expansion, and energy conservation.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eTwo elegant finishes\u003c\/span\u003e\u003cspan class=\"ds\"\u003eSilver for a technical style, brass-style gold for a cabinet-of-curiosities feel.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e➤\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eA light wood base\u003c\/span\u003e\u003cspan class=\"ds\"\u003eA warm base that turns the machine into a beautiful desk object.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-des\"\u003e\n\n\u003cp class=\"t\"\u003eTwo centuries of mechanical genius\u003c\/p\u003e\n\n\u003cdiv class=\"x\"\u003e\n\n\u003cp\u003eIn 1816, during the height of the Industrial Revolution, steam engines were exploding regularly. \u003cstrong\u003eRobert Stirling\u003c\/strong\u003e then imagined a safer engine, without a pressurized boiler, requiring only a heat source and a little trapped air. Two centuries later, his invention continues to inspire engineers and researchers.\u003c\/p\u003e\n\n\u003cp\u003eThis twin-cylinder model offers a desk-sized version, featuring the most fascinating aspects of mechanics: the \u003cstrong\u003eballet of the rods\u003c\/strong\u003e, the oscillating rocker, the red flywheel gaining momentum, and that little LED lighting up like a reward.\u003c\/p\u003e\n\n\u003cp\u003eLight the lamps, wait a few moments, and give the flywheel a nudge: the machine comes to life with a light ticking. This is exactly what we love to gather in our \u003ca href=\"\/collections\/physique-et-mouvement\"\u003ePhysics \u0026amp; Movement\u003c\/a\u003e collection: objects that aren't just beautiful, but actually work.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-steps\"\u003e\n\n\u003ch4\u003eStarting the engine\u003c\/h4\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e1\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003ePlace it on a stable surface.\u003c\/strong\u003e A flat, non-flammable table, cleared of any paper or fabric, away from drafts.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e2\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003ePrepare the lamps.\u003c\/strong\u003e Fill the alcohol lamps with methylated spirits (not included) without exceeding two-thirds, then close and wipe clean.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e3\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eHeat then start.\u003c\/strong\u003e Light the wicks under the cylinders, wait for the air to heat up, then give the flywheel a light push.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e4\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eObserve, then extinguish.\u003c\/strong\u003e Admire the rotation and the LED, then cap the lamps and let them cool before touching.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eComparison: which Stirling engine to choose?\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-cmp\"\u003e\n\n\u003ctable\u003e\n\n\u003cthead\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCriteria\u003c\/th\u003e\n\n\u003cth\u003eTwin-cylinder with generator (this model)\u003c\/th\u003e\n\n\u003cth\u003eLabo low-temperature Stirling\u003c\/th\u003e\n\n\u003cth\u003eLabo Stirling assembly kit\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eHeat source\u003c\/td\u003e\n\n\u003ctd\u003eTwo alcohol lamps\u003c\/td\u003e\n\n\u003ctd\u003eSmall temperature difference (hand, hot cup)\u003c\/td\u003e\n\n\u003ctd\u003eVaries by model\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eMechanical spectacle\u003c\/td\u003e\n\n\u003ctd\u003eTwo cylinders, rocker, red flywheel\u003c\/td\u003e\n\n\u003ctd\u003eSlow and silent movement\u003c\/td\u003e\n\n\u003ctd\u003ePleasure of assembly\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eElectricity production\u003c\/td\u003e\n\n\u003ctd\u003eYes, generator and LED\u003c\/td\u003e\n\n\u003ctd\u003eSee specific product page\u003c\/td\u003e\n\n\u003ctd\u003eSee specific product page\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eOpen flame\u003c\/td\u003e\n\n\u003ctd\u003eYes\u003c\/td\u003e\n\n\u003ctd\u003eNo\u003c\/td\u003e\n\n\u003ctd\u003eVaries by model\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eIdeal audience\u003c\/td\u003e\n\n\u003ctd\u003eMechanical enthusiasts, teachers (14+)\u003c\/td\u003e\n\n\u003ctd\u003eDesk, gentle demonstration\u003c\/td\u003e\n\n\u003ctd\u003eDIYers, model makers\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-info\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eGood to know:\u003c\/strong\u003e a Stirling engine does not start instantly. The cylinders must be allowed to heat for a few moments to create a sufficient temperature difference, then the flywheel must be started by hand. The engine only turns as long as the flame is maintained; it stops on its own when the lamps are extinguished and the cylinders cool down. This is in no way a perpetual motion machine.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-tip\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e for a demonstration in a classroom or in front of guests, dim the room lights: the little generator LED becomes clearly visible and makes the energy conversion very clear. If the flywheel struggles to start, wait a few more seconds before restarting, and check that the wicks are centered under the cylinders.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eTechnical specifications\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-sp\"\u003e\n\n\u003ctable\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eType\u003c\/td\u003e\n\n\u003ctd\u003eHot air Stirling engine, two horizontal cylinders\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eFinishes\u003c\/td\u003e\n\n\u003ctd\u003eSilver · Brass-style gold\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\n\u003ctd\u003eMetal; light wood base\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eFlywheel\u003c\/td\u003e\n\n\u003ctd\u003eRed, spoked\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eGenerator\u003c\/td\u003e\n\n\u003ctd\u003eDriven by the engine, powers an LED\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eHeat source\u003c\/td\u003e\n\n\u003ctd\u003eTwo glass alcohol lamps (visible in photos)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eFuel\u003c\/td\u003e\n\n\u003ctd\u003eMethylated spirits, not included\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eAnnounced scale\u003c\/td\u003e\n\n\u003ctd\u003e1:12 (according to manufacturer)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eApproximate dimensions\u003c\/td\u003e\n\n\u003ctd\u003eAbout 17.5 × 9.5 cm base, 13 cm height\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eRecommended age\u003c\/td\u003e\n\n\u003ctd\u003e14 years and older\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eAnnounced compliance\u003c\/td\u003e\n\n\u003ctd\u003eCE (according to manufacturer)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\n\u003ctd\u003eAssembled or kit (not specified)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-warn\"\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrecautions — open flame:\u003c\/strong\u003e never leave the engine running unattended. Use on a stable, non-flammable surface, away from curtains, paper, and flammable materials. Fill lamps only when flames are extinguished and lamps are cold, and store alcohol out of reach of children. The cylinders remain burning hot for several minutes after extinguishing: do not touch. Small parts: not suitable for children under 14 without adult supervision.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-gift\"\u003e\n\n\u003ch3\u003eA gift that makes engineers' eyes shine\u003c\/h3\u003e\n\n\u003cp\u003eFor an engineer, a physics professor, a mechanical student, a fan of steam and vintage machines, or a curious young person over 14, this engine is a rare gift: it is meant to be admired, demonstrated, and always sparks questions. It marks a graduation, retirement, Father's Day, or a birthday.\u003c\/p\u003e\n\n\u003cp\u003eTo extend the discovery, explore the entire \u003ca href=\"\/collections\/objets-scientifiques\"\u003eLabo d'Atelier Atypique\u003c\/a\u003e, with its other Stirling engines, pendulums, and moving objects, or our \u003ca href=\"\/collections\/bureau-et-hi-tech\"\u003eDesk \u0026amp; Hi-tech\u003c\/a\u003e selection.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-faq\"\u003e\n\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eHow does this Stirling engine work?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe Stirling engine is a \u003cstrong\u003ehot air engine\u003c\/strong\u003e: air trapped in the cylinders is alternately heated by the flame of alcohol lamps and cooled on the opposite side. By expanding, the air pushes a piston; by contracting, it lets it return. This back-and-forth motion is transmitted by the \u003cstrong\u003erods\u003c\/strong\u003e to the \u003cstrong\u003eflywheel\u003c\/strong\u003e, whose momentum regulates the rotation. On this twin-cylinder model, the two pistons work in an offset manner for smoother movement. The rotation finally drives a small \u003cstrong\u003egenerator\u003c\/strong\u003e that lights an LED, illustrating the transition from thermal energy to mechanical then electrical energy.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eIs the alcohol included?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eNo, \u003cstrong\u003efuel is not included\u003c\/strong\u003e. The photos show two \u003cstrong\u003eglass alcohol lamps\u003c\/strong\u003e placed under the cylinders; they are used with commercial \u003cstrong\u003emethylated spirits\u003c\/strong\u003e, available in supermarkets or hardware stores. Fill each lamp without exceeding two-thirds, always when flames are extinguished and lamps are cold, then close carefully and wipe away any spills before lighting. Keep the alcohol bottle closed, away from any flame, and out of reach of children. Never use gasoline, lighter fluid, or any other fuel not intended for this type of lamp.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eIs the engine delivered assembled?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe manufacturer does not specify if the engine is delivered \u003cstrong\u003efully assembled\u003c\/strong\u003e or as an \u003cstrong\u003eassembly kit\u003c\/strong\u003e, and we prefer not to confirm on their behalf. The supplier page mentions a set of twenty elements, which may correspond to the engine parts, lamps, and accessories. In any case, take the time to check the tightness of the parts and the free movement of the flywheel before the first start. If you specifically want a model to build yourself, the Labo also offers a \u003cstrong\u003eStirling assembly kit\u003c\/strong\u003e, designed for the pleasure of building.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eCan the engine run indefinitely?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eNo. The Stirling engine is not a \u003cstrong\u003eperpetual motion machine\u003c\/strong\u003e, which would be physically impossible: it needs a \u003cstrong\u003eheat source\u003c\/strong\u003e to function. As long as the alcohol lamps burn and the temperature difference between the hot and cold parts of the cylinders is sufficient, it runs steadily. As soon as the flame goes out, the cylinders cool down, the temperature gap decreases, and the flywheel slows down until it stops. The operating time therefore depends on the amount of alcohol in the lamps. Do not extend demonstrations beyond reason and let cool between uses.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat is the difference between the silver and gold finishes?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eBoth finishes share the same mechanics, the same \u003cstrong\u003ered spoked flywheel\u003c\/strong\u003e, the same generator with LED, and the same \u003cstrong\u003elight wood base\u003c\/strong\u003e. Only the appearance of the metallic parts changes. The \u003cstrong\u003eSilver\u003c\/strong\u003e version features silver-colored cylinders and parts for a technical and contemporary look, which suits a modern office. The \u003cstrong\u003eGold\u003c\/strong\u003e version sports a brass-style finish, warmer, evoking antique scientific instruments and curiosity cabinets. The choice is therefore primarily aesthetic: consider the decor of the room where the engine will be displayed.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eIs this engine suitable for educational use?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eYes, that is one of its major strengths. This engine allows for concrete illustration of \u003cstrong\u003egas expansion\u003c\/strong\u003e, the \u003cstrong\u003ethermodynamic cycle\u003c\/strong\u003e, motion transmission via rods, and \u003cstrong\u003eenergy conversion\u003c\/strong\u003e: thermal, then mechanical, then electrical thanks to the generator and its LED. It interests physics and technology teachers, science clubs, and curious families. The manufacturer recommends it for ages \u003cstrong\u003e14 and up\u003c\/strong\u003e. In the presence of students or children, the demonstration must always be conducted by an adult, due to the open flame and hot parts.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eHow do I maintain the Stirling engine?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eAlways let the engine \u003cstrong\u003ecool completely\u003c\/strong\u003e before handling or cleaning. Dust off the mechanical parts with a soft brush or a dry cloth, and wipe the wooden base with a slightly damp cloth, without aggressive products. If the movement becomes less fluid, a drop of fine oil on the joints can help, avoiding the cylinders. Empty the alcohol lamps if the engine is to remain unused for a long time, and store it away from dust. Regularly check the condition of the wicks and replace them if they are too worn to ensure a stable flame.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Atelier Atypique","offers":[{"title":"Money","offer_id":54860801605955,"sku":"1005004879058245-Silver","price":119.9,"currency_code":"EUR","in_stock":true},{"title":"Golden","offer_id":54860801638723,"sku":"1005004879058245-Golden","price":119.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/Sfa3718df67d145db9228453f6838a150i.webp?v=1791060849"},{"product_id":"3d-printing-aircraft-turbofan-engine-model-building-set-metallic-surface-pla-model-with-black-base-aviation-mechanical-display-ornament-for-office-living-room-studio-holiday-gift","title":"Cutaway turbofan aircraft engine model, 3D kit - AEROS","description":"\u003cstyle\u003e\n.aa{font-family:Georgia,'Times New 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class=\"aa\"\u003e\n\n\u003cp\u003e\u003cspan class=\"aa-badge aa-badge-noir\"\u003eAssembly kit\u003c\/span\u003e \u003cspan class=\"aa-badge aa-badge-brun\"\u003e3D printing\u003c\/span\u003e Immerse yourself in the heart of an airliner with this \u003cstrong\u003ecutaway turbofan jet engine model\u003c\/strong\u003e, for you to assemble yourself. Its parts are \u003cstrong\u003e3D printed\u003c\/strong\u003e in \u003cstrong\u003emetallic-finish PLA\u003c\/strong\u003e: the \u003cstrong\u003eblades\u003c\/strong\u003e and casings take on \u003cstrong\u003ecopper and silver\u003c\/strong\u003e highlights, the inlet cone shines like polished metal, and the whole assembly rests on a \u003cstrong\u003eblack base\u003c\/strong\u003e that presents it like a museum piece. The cutaway reveals the architecture of the high-bypass engine: the large fan at the front, followed by the compressor stages, the combustion chamber, and the turbine. Once assembled, a \u003cstrong\u003esmall battery-powered motor\u003c\/strong\u003e spins the blades, allowing you to understand at a glance how air is drawn in, compressed, and ejected. Delivered in a \u003cstrong\u003eblack box\u003c\/strong\u003e with its parts secured in foam, this kit, measuring approximately 28 × 15 × 10 cm, will appeal to aviation enthusiasts, engineers, and anyone who enjoys understanding how machines work. A desktop object that is as educational as it is decorative.\u003c\/p\u003e\n\n\u003ch3 class=\"aa-title\"\u003eVersion and finish\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-vars\"\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v dark\" style=\"background: linear-gradient(135deg,#1A1A1A 0%,#704028 60%,#9A9A9A 100%);\"\u003eASSEMBLY KIT\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eAssembly kit\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003e3D printed parts with metallic finish, arranged in a black foam-lined box, black base\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v dark\" style=\"background: linear-gradient(135deg,#8B5E2A 0%,#C88A4B 50%,#9A9A9A 100%);\"\u003eCOPPER \u0026amp; SILVER FINISH\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eCopper and silver finish\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eCopper and metallic silver blades and casings, silver cone, black base\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-mat\"\u003e\n\n\u003ch3\u003eThe turbofan, engine of airliners\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003ehigh-bypass turbofan\u003c\/strong\u003e engine powers almost all modern airliners. At the front, a large \u003cstrong\u003efan\u003c\/strong\u003e draws in a huge amount of air. A small portion of this air, the \u003cstrong\u003ecore flow\u003c\/strong\u003e, enters the heart of the engine: it is compressed by several compressor stages, mixed with fuel, and burned in the combustion chamber. The hot gases then pass through the turbine, which recovers part of their energy to drive the compressor and fan, before being ejected toward the rear.\u003c\/p\u003e\n\n\u003cp\u003eMost of the air, the \u003cstrong\u003ebypass flow\u003c\/strong\u003e, bypasses the engine core and is simply accelerated by the fan. This provides the bulk of the thrust in modern engines, while reducing fuel consumption and noise. The ratio between these two flows, known as the bypass ratio, is one of the major advances in civil aviation since the 1960s. This cutaway model allows you to visualize these two paths of air and the sequence of stages.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eWhy you'll love it\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-ben\"\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eA cutaway view\u003c\/span\u003e\u003cspan class=\"ds\"\u003eFan, compressor, combustion, turbine: the inside of the jet engine becomes clear.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eRotating blades\u003c\/span\u003e\u003cspan class=\"ds\"\u003eA battery-operated motor sets the blades in rotation for a vivid demonstration.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e➤\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eThe pleasure of assembly\u003c\/span\u003e\u003cspan class=\"ds\"\u003eAssembling the engine yourself means understanding the role of every part.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eA metallic finish\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe metallic-surface PLA provides copper and silver highlights worthy of an exhibition model.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eA polished case\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe parts arrive arranged in foam, inside an elegant black box.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e➤\u003c\/span\u003e\n\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eA striking desk object\u003c\/span\u003e\u003cspan class=\"ds\"\u003eOn its black base, it stands out as a collector's item for aviation enthusiasts.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-des\"\u003e\n\n\u003cp class=\"t\"\u003eThe art of engineering at desk scale\u003c\/p\u003e\n\n\u003cdiv class=\"x\"\u003e\n\n\u003cp\u003eYou only need to have seen a jet engine up close, on the tarmac or in an air museum, to remember that impression of power: a \u003cstrong\u003ering of blades\u003c\/strong\u003e perfectly aligned, tolerances to within a tenth of a millimeter, and behind it, a whole hidden world.\u003c\/p\u003e\n\n\u003cp\u003eThis cutaway model makes that world visible. The blades, stages, and casings reveal themselves layer by layer, and the \u003cstrong\u003emetallic finish\u003c\/strong\u003e evokes the titanium and alloys of real engines. 3D printing, an additive manufacturing technique now used even in the aeronautics industry, adds a modern touch to the object.\u003c\/p\u003e\n\n\u003cp\u003eOnce assembled, it sits on a desk like an engineer's trophy. It naturally joins our \u003ca href=\"\/collections\/physique-et-mouvement\"\u003ePhysics \u0026amp; Motion\u003c\/a\u003e collection, where every object elegantly recounts a mechanical principle.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-steps\"\u003e\n\n\u003ch4\u003eFrom box to demonstration\u003c\/h4\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e1\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eInventory the parts.\u003c\/strong\u003e Gently remove the elements from their foam and lay them out on a clean, clear surface.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e2\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eAssemble step by step.\u003c\/strong\u003e Mount the base, then the engine stages in order, being careful not to force the thinner blades.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e3\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eInstall the batteries.\u003c\/strong\u003e Place the appropriate batteries into the electric motor housing, ensuring correct polarity.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e4\u003c\/span\u003e\n\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eStart the rotation.\u003c\/strong\u003e Watch the blades spin and follow the air's journey, from the fan to the exhaust nozzle.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eComparison with other Lab models\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-cmp\"\u003e\n\n\u003ctable\u003e\n\n\u003cthead\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCriteria\u003c\/th\u003e\n\n\u003cth\u003eTurbofan engine model\u003c\/th\u003e\n\n\u003cth\u003eStirling demo engine\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003ePrinciple illustrated\u003c\/td\u003e\n\n\u003ctd\u003eAeronautical high-bypass propulsion\u003c\/td\u003e\n\n\u003ctd\u003eHot air engine, thermodynamic cycle\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eSource of motion\u003c\/td\u003e\n\n\u003ctd\u003eSmall battery-operated electric motor\u003c\/td\u003e\n\n\u003ctd\u003eHeat (flame or heat source depending on model)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eActual engine operation\u003c\/td\u003e\n\n\u003ctd\u003eNo: visual demonstration of rotation\u003c\/td\u003e\n\n\u003ctd\u003eYes: the engine actually functions\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eManufacturing\u003c\/td\u003e\n\n\u003ctd\u003e3D printing, metallic-surface PLA\u003c\/td\u003e\n\n\u003ctd\u003eMetal parts\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\n\u003ctd\u003eAssembly kit\u003c\/td\u003e\n\n\u003ctd\u003eDepends on model\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eIdeal audience\u003c\/td\u003e\n\n\u003ctd\u003eAviation enthusiasts, engineers, modelers\u003c\/td\u003e\n\n\u003ctd\u003eThose curious about physics and thermodynamics\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-info\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eGood to know:\u003c\/strong\u003e \u003cstrong\u003ePLA\u003c\/strong\u003e (polylactic acid) is a plant-based plastic widely used in 3D printing. Its \"metallic\" version contains pigments that imitate the look of metal, but the model is not made of solid metal: it is therefore lightweight and must be handled with care. The fine lines visible on the surface are the normal signature of layer-by-layer printing.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-tip\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e Take your time during assembly and work in daylight on a clear table. For an optimal presentation, position the model at a three-quarter angle, with the cutaway side facing you: the fan and internal stages will be visible at a single glance. Remove the batteries if the model will not be spun for a long time.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eTechnical characteristics\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-sp\"\u003e\n\n\u003ctable\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eType\u003c\/td\u003e\n\n\u003ctd\u003eHigh-bypass jet engine model, cutaway view\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eVersion\u003c\/td\u003e\n\n\u003ctd\u003eAssembly kit\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eManufacturing\u003c\/td\u003e\n\n\u003ctd\u003e3D printing\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\n\u003ctd\u003eMetallic-surface PLA\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eFinish\u003c\/td\u003e\n\n\u003ctd\u003eCopper and metallic silver blades and casings, silver cone\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eBase\u003c\/td\u003e\n\n\u003ctd\u003eBlack\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eApproximate dimensions\u003c\/td\u003e\n\n\u003ctd\u003eApprox. 28 × 15 × 10 cm (based on photo)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eAnimation\u003c\/td\u003e\n\n\u003ctd\u003eBlade rotation via battery-operated electric motor\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eBattery type and quantity\u003c\/td\u003e\n\n\u003ctd\u003eNot disclosed\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eBatteries included\u003c\/td\u003e\n\n\u003ctd\u003eNot disclosed\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003ePackaging\u003c\/td\u003e\n\n\u003ctd\u003eBlack box with foam padding\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eNumber of parts \/ manual\u003c\/td\u003e\n\n\u003ctd\u003eNot disclosed\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-warn\"\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrecautions:\u003c\/strong\u003e This is a collector's model, not a toy. It contains small parts and batteries: keep out of reach of children under 3 years old. PLA deforms in heat: do not expose the model to direct sunlight behind glass, near a radiator, or in a car. Do not put fingers into the rotating blades and never force the thin parts during assembly.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-gift\"\u003e\n\n\u003ch3\u003eThe ideal gift for an aviation enthusiast\u003c\/h3\u003e\n\n\u003cp\u003ePrivate pilot, aeronautical engineer, mechanic, engineering student, airshow lover, or simply a traveler fascinated by airplanes: this model is a gift that is built and has a story to tell. It marks a retirement, a graduation, a first flight, or a birthday, and also makes a very beautiful corporate gift for the aeronautics sector.\u003c\/p\u003e\n\n\u003cp\u003eTo complete the gift, discover other items from the \u003ca href=\"\/collections\/objets-scientifiques\"\u003eAtypical Workshop Lab\u003c\/a\u003e or our \u003ca href=\"\/collections\/bureau-et-hi-tech\"\u003eOffice \u0026amp; High-Tech\u003c\/a\u003e selection, for a truly realistic engineer's desk.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003ch3 class=\"aa-title\"\u003eFrequently asked questions\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-faq\"\u003e\n\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eDoes the model come assembled?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eNo, this is an \u003cstrong\u003eassembly kit\u003c\/strong\u003e. The 3D printed parts are delivered in a \u003cstrong\u003eblack box\u003c\/strong\u003e, secured in foam that protects them during transport. Assembly is part of the pleasure: by mounting the base and then the different engine stages, you concretely understand how the fan, compressor, and turbine articulate. The exact number of parts and the presence of a detailed manual are not disclosed by the manufacturer. We recommend proceeding \u003cstrong\u003ecalmly\u003c\/strong\u003e on a well-lit table and never forcing the blades, which are the model's thinnest elements.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eDo the blades really spin?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eYes. The model incorporates a \u003cstrong\u003esmall battery-operated electric motor\u003c\/strong\u003e that spins the blades, allowing for a vivid demonstration of how a jet engine works. This is, of course, an \u003cstrong\u003eanimation\u003c\/strong\u003e: the model produces neither thrust nor combustion; it only reproduces the rotational movement to help visualize the air's path. The \u003cstrong\u003ebattery type and quantity\u003c\/strong\u003e are not specified by the manufacturer, and their inclusion in the box is not confirmed: check the battery compartment during assembly to choose the right format. Remember to remove the batteries if not in use for an extended period.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat are the model's dimensions?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eAccording to the measurements visible in the manufacturer's photos, the assembled model measures about \u003cstrong\u003e11 × 6 × 4 inches\u003c\/strong\u003e, or approximately \u003cstrong\u003e28 × 15 × 10 cm\u003c\/strong\u003e with its base. This is an ideal format for a \u003cstrong\u003edesk\u003c\/strong\u003e, a bookshelf, or a collector's display case: large enough for the details of the blades and stages to be easily legible, but compact enough not to clutter a workspace. The weight is not disclosed; as the model is made of PLA, it remains lightweight. Plan for a stable location, protected from direct sunlight and heat sources.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat material is it made of?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eThe model is \u003cstrong\u003e3D printed\u003c\/strong\u003e in \u003cstrong\u003ePLA\u003c\/strong\u003e, a plant-based plastic (polylactic acid) widely used in additive manufacturing. The version used here has a \u003cstrong\u003emetallic surface\u003c\/strong\u003e: pigments give the blades and casings \u003cstrong\u003ecopper and silver\u003c\/strong\u003e highlights that evoke the metal of a real engine. It is therefore not solid metal, which makes the object lightweight and pleasant to handle, but more sensitive to heat and impact. Fine lines may be visible on the surface: these are the normal signature of layer-by-layer printing, not a defect.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eWhat exactly does the model represent?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eIt represents a \u003cstrong\u003ehigh-bypass turbofan\u003c\/strong\u003e jet engine, the type of engine that powers most airliners. The \u003cstrong\u003ecutaway view\u003c\/strong\u003e reveals the interior: the large \u003cstrong\u003efan\u003c\/strong\u003e at the front, the compressor stages, the combustion zone, and the turbine, all the way to the rear exhaust nozzle. It allows you to understand the two paths of air—the core flow that passes through the heart of the engine and the bypass flow that goes around it. It is a \u003cstrong\u003egeneric and educational\u003c\/strong\u003e representation that does not reproduce a specific engine model or brand.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eIs the assembly difficult?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eAssembly primarily requires \u003cstrong\u003epatience and delicacy\u003c\/strong\u003e, more than technical know-how. The parts are pre-printed and arranged in the box's foam; the main challenge is to respect the order of the stages and not to force thin elements like the blades. The manufacturer does not disclose assembly time or difficulty level. We recommend this kit for \u003cstrong\u003eadults and teenagers\u003c\/strong\u003e accustomed to models or curious about mechanics. Work on a clear table with good lighting, and keep small parts in a bowl so as not to lose anything during assembly.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\n\u003csummary\u003eHow do I maintain the model once assembled?\u003c\/summary\u003e\n\u003cdiv class=\"aa-a\"\u003e\n\n\u003cp\u003eOnce assembled, the model requires little maintenance. Dust it regularly with a \u003cstrong\u003esoft brush\u003c\/strong\u003e or a \u003cstrong\u003eblower\u003c\/strong\u003e, especially between the blades where dust tends to accumulate. Avoid water and household cleaners, which could dull the metallic finish. Above all, keep it away from \u003cstrong\u003eheat\u003c\/strong\u003e: PLA can deform in direct sunlight behind glass, near a radiator, or in a car during the summer. If you do not spin the blades for several weeks, remove the batteries to avoid any risk of leakage in the compartment.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Atelier Atypique","offers":[{"title":"Default Title","offer_id":54860801540419,"sku":"1005012831820155-Poland","price":94.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/Sd78e02b515904b6d86f66b3e24c065224.webp?v=1791060813"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/collections\/S8d410d550e3f4d4da4b6fcd4f02614bas.webp?v=1791012554","url":"https:\/\/atelier-atypique.com\/collections\/physique-et-mouvement.oembed","provider":"Atelier Atypique","version":"1.0","type":"link"}