{"product_id":"meldea-melde-experiment","title":"Meldea – Melde’s Experiment \/ f = n√(T\/μ)\/(2L) Physics Sticker","description":"\u003cp\u003eMeldea, a young wave-tamer, holds a tuning fork that shakes a glowing string into waves.\u003c\/p\u003e\u003ch3\u003eThe Physics\u003c\/h3\u003e\u003cp\u003eAround 1859 Franz Melde tied a string to the prong of a tuning fork and pulled it taut (Ann. Phys. 185, 193, 1860). At the right tensions the string broke into steady standing waves, with nodes that stood still and loops that blurred. Change the tension and the number of loops jumps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ef = n√(T\/μ)\/(2L)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ef: frequency of the string vibration (Hz)\u003c\/li\u003e\n\u003cli\u003en: number of loops\u003c\/li\u003e\n\u003cli\u003eT: tension (N)\u003c\/li\u003e\n\u003cli\u003eμ: mass per unit length (kg\/m)\u003c\/li\u003e\n\u003cli\u003eL: length of the string (m)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWith the fork driving along the string, the string vibrates at half the fork's frequency; driven sideways, at the same frequency.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eHonest caveat:\u003c\/em\u003e Real strings stretch and have stiffness, so loops are not perfectly evenly spaced.\u003c\/p\u003e\u003ch3\u003eOn the sticker\u003c\/h3\u003e\u003cp\u003eMeldea holds a tuning fork at one end of a glowing orange wavy string. Printed text: \u003cstrong\u003eMELDEA\u003c\/strong\u003e with the line \u003cstrong\u003ef = n√(T\/μ)\/(2L)\u003c\/strong\u003e. Pixel-art kiss-cut vinyl sticker, white, in 2″, 3″, 4″ and 6″ sizes.\u003c\/p\u003e","brand":"Printify","offers":[{"title":"2\" × 2\" \/ White","offer_id":50964268744807,"sku":"20156624504413259799","price":4.99,"currency_code":"USD","in_stock":true},{"title":"3\" × 3\" \/ White","offer_id":50964268777575,"sku":"30363279111021151857","price":6.99,"currency_code":"USD","in_stock":true},{"title":"4\" × 4\" \/ White","offer_id":50964268810343,"sku":"24451687177238950452","price":8.99,"currency_code":"USD","in_stock":true},{"title":"6\" × 6\" \/ White","offer_id":50964268843111,"sku":"31374344795563401959","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8746\/9159\/files\/6059535193102558249_1200.jpg?v=1793663764","url":"https:\/\/pixelatedphysics.com\/pt\/products\/meldea-melde-experiment","provider":"Pixelated Physics","version":"1.0","type":"link"}