Tedco 00502 Hand Boiler

TEDCO 00502 Hand BoilerRecommended ages 14+Receive 1 of 4 colorsCaution: Liquid can damage finishes and furniture. If broken, seller not responsible. It has never been more fun to learn Engage children of all ages with STEM toys that will encourage them to explore, understand and be inspired by the world of science, technology, engineering and math. Demonstrating Charles' Law and energy transfer, the temperature of your hand is enough to send boiling liquid up and through the twist and turns of this glass sculpture. Why? Because the heat in your hand increases the temperature of the liquid which increases the  air pressure in the sculpture. The increased air pressure then pushes the liquid up the tube, once all the liquid reaches the top of the glass, air bubbles are forced up the sculpture causing the liquid in the top bulb appear to "boil". Receive 1 of 4 colors Recommended ages 14+ Caution: Liquid can damage finishes and furniture. If broken, seller not responsible.