{"product_id":"railon-motional-emf-pixel-sticker","title":"Railon – Motional EMF Physics Sticker","description":"\u003cp\u003eMeet Railon, a metal bar who makes a voltage by sliding through a magnetic field. The motional emf is field times length times speed: a 0.2 m bar moving at 3 m\/s in 0.5 T gives 0.3 V. Every generator, from bicycle dynamo to power station, uses this idea. Pixel-art kiss-cut sticker in 2, 3, 4 and 6 inches; equation, symbols and sources in the physics panel below.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"2\" × 2\" \/ White","offer_id":50658291286119,"sku":"20793268635378480807","price":4.99,"currency_code":"USD","in_stock":true},{"title":"3\" × 3\" \/ White","offer_id":50658291318887,"sku":"19520960852491304202","price":6.99,"currency_code":"USD","in_stock":true},{"title":"4\" × 4\" \/ White","offer_id":50658291351655,"sku":"38336373663094484775","price":8.99,"currency_code":"USD","in_stock":true},{"title":"6\" × 6\" \/ White","offer_id":50658291384423,"sku":"78507250638826118941","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/01_clean_56b0e1d7-32e2-4d1e-8c78-2db939a3968b.jpg?v=1792798478","url":"https:\/\/pixelatedphysics.com\/products\/railon-motional-emf-pixel-sticker","provider":"Pixelated Physics","version":"1.0","type":"link"}