{"product_id":"ficka-ficks-law-pixel-sticker","title":"Ficka – Fick's Law Physics Sticker","description":"\u003cp\u003eMeet Ficka, who goes from crowded to spacious: molecules spread from where they are crowded to where they are sparse, and they spread faster when the difference is steeper. Adolf Fick described this diffusion law in 1855. Tea spreading out from a teabag is a good example. 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":50657561804903,"sku":"26396667687499840503","price":4.99,"currency_code":"USD","in_stock":true},{"title":"3\" × 3\" \/ White","offer_id":50657561837671,"sku":"14005391395858969104","price":6.99,"currency_code":"USD","in_stock":true},{"title":"4\" × 4\" \/ White","offer_id":50657561870439,"sku":"22074505934212728677","price":8.99,"currency_code":"USD","in_stock":true},{"title":"6\" × 6\" \/ White","offer_id":50657561903207,"sku":"20198605126687546539","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/01_clean_d981c9f7-517d-4238-a729-a219d2043be9.jpg?v=1792788587","url":"https:\/\/pixelatedphysics.com\/products\/ficka-ficks-law-pixel-sticker","provider":"Pixelated Physics","version":"1.0","type":"link"}