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Hand Boiler
Original price was: $6.95.$4.95Current price is: $4.95.
A favorite example of thermodynamics. This is for ONE hand boiler.
Out of stock
Quote productDescription
A favorite example of thermodynamics. The heat of your hand on the bottom bubble causes the air in the hand boiler to expand, forcing the liquid into the top bubble, making it appear to boil. Glass construction with two bulbs connected by a spiral tube. Design and color may vary on availability.
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