{"product_id":"kundts-tube","title":"Kundt's Tube","description":"Product Information: ..\u003cbr\u003eGlass tube for demonstrating standing sound waves and calculating wavelengths of sound using cork powder in a method devised by Kundt.\u003cbr\u003eCork powder is spread evenly throughout the tube by means of a filler chute. Then a sound source, e.g. a whistle, a 1700 Hz tuning fork (U10115) or a horn speaker (U8432680), is used to excite the powder into a regular pattern of nodes and antinodes. The effective length of the tube can be altered by means of a piston.","brand":"3B Scientific","offers":[{"title":"Default Title","offer_id":49419054809365,"sku":"3BS1000814","price":214.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/U8432845_01_1200_1200_Kundts-Tube.jpg?v=1761021129","url":"https:\/\/unitedsupplycorp.com\/products\/kundts-tube","provider":"United Supply Corp.","version":"1.0","type":"link"}