{"product_id":"hand-boiler","title":"Hand Boiler","description":"\u003cp\u003eWatch heat turn into motion with a Hand Boiler! This fascinating glass physics demonstration uses the warmth of your hand to create a bubbling, boiling effect—no batteries, electricity, or flame required.\u003c\/p\u003e\n\u003cp\u003eHold the lower chamber in your hand and watch as your \u003cstrong\u003ebody heat transfers energy to the liquid\u003c\/strong\u003e inside. As the liquid warms, it vaporizes and expands, pushing through the connected glass tubes toward the upper chamber. When the liquid reaches the top, it creates a mesmerizing bubbling effect that makes the invisible process of heat and energy transfer easy to see.\u003c\/p\u003e\n\u003cp\u003eRelease the Hand Boiler and watch the process reverse. As the liquid cools, it condenses and flows back into the lower chamber, ready for another experiment.\u003c\/p\u003e\n\u003cp\u003eThis hands-on physics toy and science demonstration is a fun way to explore \u003cstrong\u003eheat transfer, temperature, pressure, vaporization, condensation, and energy\u003c\/strong\u003e. It’s an engaging addition to\u003cstrong\u003e \u003c\/strong\u003escience classrooms, STEM activities, home science experiments, and curious collections.\u003c\/p\u003e\n\u003cp\u003eHold it. Warm it. Watch the physics happen right before your eyes!\u003c\/p\u003e","brand":"The Toy Network","offers":[{"title":"Default Title","offer_id":67620183081189,"sku":"39325","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0401\/2045\/files\/HandBoiler_BoxAngle.png?v=1791327590","url":"https:\/\/www.exploratoriumstore.com\/products\/hand-boiler","provider":"Exploratorium","version":"1.0","type":"link"}