{"product_id":"pendulum-wave-machine-15-ball-harmonic-motion-demonstrator","title":"Pendulum Wave Machine — 15-Ball Harmonic Motion Demonstrator","description":"\u003cp\u003eFifteen pendulums. Fifteen different lengths. One unified wave that breathes in and out of order.\u003c\/p\u003e\u003cp\u003eThe pendulum wave machine is one of the most mesmerizing demonstrations in physics. Each pendulum is tuned to complete a different integer number of swings in 60 seconds. Started together, they drift apart into apparent chaos — then synchronize back into phase with mathematical precision. The motion is purely Newtonian, governed entirely by conservation of energy and the isochronous period of a pendulum.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat you can observe:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSimple harmonic motion and period dependence on length\u003c\/li\u003e\n\u003cli\u003eConstructive and destructive interference patterns\u003c\/li\u003e\n\u003cli\u003eBeats — the interference of two nearly equal frequencies\u003c\/li\u003e\n\u003cli\u003ePhase relationships and group velocity\u003c\/li\u003e\n\u003cli\u003eThe relationship between spatial patterns and frequency ratios\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e Solid hardwood frame · 15 steel ball bearings on nylon cord · Tuned to ±0.1% accuracy · Dimensions: 45cm × 30cm · Freestanding\u003c\/p\u003e\u003cp\u003eOne of the most-watched physics demonstrations on the internet. Now on your shelf.\u003c\/p\u003e","brand":"Golden Physics Project","offers":[{"title":"Default Title","offer_id":54140237250852,"sku":"GPP-PENDULUM-WAVE","price":59.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2879\/9524\/files\/364500.jpg?v=1780680355","url":"https:\/\/shop.goldenphysics.org\/products\/pendulum-wave-machine-15-ball-harmonic-motion-demonstrator","provider":"Golden Physics Project","version":"1.0","type":"link"}