The hand boiler works on the result of Charles' law by Jacques Charles. It was discovered in 1787 that the volume of gas is proportional to its absolute temperature. Inside the glass hand boiler the volume of the gas increases as the gas volume increases. This mean the heat from your hand causes the gas inside the glass to expand enough to displace the liquid.
- Runs from the heat of your hand
- Demonstrates thermodynamics
- Scientific curiosity
- Also known as a 'love meter'
- Hand Blown glass
- 4 designs/colours: purple, green, red and blue
- 18cm tall