YANZHE Office Thinking Hand Boiler, Glass Science Energy Transfer, Children Science Experiment, Thermometer Spiral Glass Science Energy Museum Toy Gifts (Blue)

【Magic Toy】Our fun hand boiler uses heat conduction to allow the liquid inside to rise and boil.
【Simple to Use】boils the liquid with your own body temperature. Cup the Glass Hand Boiler lower chamber in your palm and watch How the liquid boils and rises through the tubes into the top chamber，Hand Boilers are artistically shaped glass sculptures containing a liquid that will "boil" as heat is transferred from your bare hand.
【Fun Game】Two people can hold the hand boiler science toyt at the same time, one holds the upper bottle and the other holds the lower bottle to see whether the liquid goes up or down; two people can also hold a glass thermometer each to see who the liquid inside rises faster.
【Multi-Situation Usage】 Office Thinking Hand Boiler It can be used as a parent-child toy for the family to play games； and can also be used as a teaching prop，to demonstrate Glass Sciences Energy Transfer。Pretty fascinating science toy and an excellent demonstration of energy transfer.
【Great gift】This liquid hand boiler set consists of a 2.17*2.17*6.89" safe hard color box and a 1.97*1.97*6.69" glass hand pot; the Hand Boiler has a smooth bottom and can be used as a creative decoration to decorate your home or office , Made of glass, so keep it out of the reach of children.

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