Watch science come to life—right in your hand!
The Hand Boiler is a timeless, eye-catching science toy that vividly demonstrates Charles’s Law and thermal energy transfer. As you wrap your hand around the base, your body heat causes the blue liquid inside to bubble and rise, simulating a boiling effect—all inside a delicate glass vessel.
This elegant demonstration of gas expansion and vapor pressure is not only a captivating visual display but also a great teaching tool. Perfect for classrooms, science fairs, desks, or collectors, it blends curiosity with a touch of vintage charm.
? Demonstrates Charles’s Law and principles of energy transfer
?️ Uses body heat to create the illusion of boiling
? Educational tool with key scientific facts printed on the packaging
? Makes a great gift or desk conversation piece
? Made of fragile glass – not a toy for young children
? Approx. 7″ tall, 2″ wide at base
?? Recommended for ages 14 and up
