{"product_id":"united-scientific®-energy-transformation-balls","title":"United Scientific® Energy Transformation Balls","description":"This pair of steel balls demonstrates energy transformation. By striking the two balls together with a piece of paper between them, kinetic energy is transformed into work which creates thermal energy. This thermal energy creates a small burn hole in the paper. There is no flame but there will be a smell of burning paper. Each ball weighs 224 grams (0.49 lbs) and has a diameter of 40 mm (1.5”). Includes activity guide.","brand":"United Scientific Supplies, Inc.","offers":[{"title":"Default Title","offer_id":49677725237525,"sku":"USSENRGYBALLS","price":33.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/enrgyballs-energy-transformation-balls-pair.jpg?v=1767565040","url":"https:\/\/unitedsupplycorp.com\/products\/united-scientific%c2%ae-energy-transformation-balls","provider":"United Supply Corp.","version":"1.0","type":"link"}