{"product_id":"smithsonian-perpetual-motion-machine","title":"Smithsonian Perpetual Motion Machine","description":"\u003ch2\u003eSmithsonian Perpetual Motion Machine\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrades: \u003c\/strong\u003e3–8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Students: \u003c\/strong\u003e1–2 students per kit; pairs are recommended\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Lessons: \u003c\/strong\u003eN\/A — no fixed lesson count specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHours of Content: \u003c\/strong\u003eApproximately 1–2 hours, estimated for setup, observation, and discussion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 170, 255);\"\u003e\u003cstrong\u003eHighlights:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBring physics to life with the Smithsonian Perpetual Motion Machine, an engaging kinetic science model that visually demonstrates key physics principles, including energy conservation, inertia, and momentum transfer. Once set in motion, the weighted spheres swing and collide, keeping movement circulating in a steady, hypnotic rhythm—illustrating the balance between potential and kinetic energy.\u003c\/p\u003e\n\u003cp\u003ePerfect for classrooms, homeschool STEM labs or as a desktop thinking piece, this perpetual motion machine encourages scientific exploration and sparks curiosity about how motion is sustained and energy moves through systems. Kids can experiment by adjusting the starting force, observing decay, testing timing, and exploring how different variables affect movement stability.\u003c\/p\u003e\n\u003cp\u003eBeyond scientific use, the machine makes a stunning display piece for offices, bedrooms, or study spaces—providing a calming and inspirational visual centerpiece. Smithsonian branding adds authenticity and educational value, making it an ideal gift for young scientists, engineers, teachers, and collectors of mechanical curiosities.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 170, 255);\"\u003e\u003cstrong\u003eWhat’s Included:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1x Perpetual Motion Machine\u003c\/li\u003e\n\u003cli\u003eColor Poster with Instructions\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 170, 255);\"\u003e\u003cstrong\u003eTechnology Requirements\/Specifications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"f_t_base f_t_color whitespace-pre-wrap f_t_paragraphSansRegular\"\u003e\n\u003cspan class=\"f_t_base f_t_color f_t_paragraphSansMedium\"\u003eDimensions:\u003c\/span\u003e\u003cspan class=\"f_t_base f_t_color f_t_paragraphSansRegular\"\u003e 29.8 x 5.1 x 26.7 cm (11.8 x 2 x 10.5 in)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"f_t_base f_t_color whitespace-pre-wrap f_t_paragraphSansRegular\"\u003eWeight:\u003cspan class=\"f_t_base f_t_color f_t_paragraphSansRegular\" style=\"font-size: 0.875rem;\"\u003e 376.48 g (13.28 oz)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 170, 255);\"\u003e\u003cstrong\u003eSpecial Notes and Considerations:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 170, 255);\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eRequires 4 (1.5V) AA batteries (not included)\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003e⚠WARNING: \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCHOKING HAZARD - Small parts. Not for children under 3 years. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Toysmith","offers":[{"title":"Default Title","offer_id":52162178580727,"sku":"FAIRE-7402","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0516\/9142\/1854\/files\/da958b2a138494a60ec7bb535a12855ab3aa9fec9e09bba75aa3311c1be1cce6.webp?v=1794602121","url":"https:\/\/stemfinity.com\/products\/smithsonian-perpetual-motion-machine","provider":"STEMfinity","version":"1.0","type":"link"}