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Item #16970
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This is a classic example of thermodynamics in action! The heat of your hand warms 1 bulb, causing the air in the hand boiler to expand. Liquid is forced into the other bulb, making it appear to boil for an exciting demonstration!
Comes with a Teacher’s Guide
Glass construction with 2 side by side bulbs connected by a straight tube
Age14+
Approx. Ship Size7.00 x 2.75 x 2.00 in
17.78 x 6.99 x 5.08 cm
17.78 x 6.99 x 5.08 cm
Weight0 lb 3 oz
0.06 kg
0.06 kg
⚠ Safety warning
CHOKING HAZARDSmall parts. Not for children under 3 yrs.
CHEMICAL HAZARD
Contains chemicals which may be harmful if misused. Read cautions on individual containers carefully. Not to be used by children except under ADULT SUPERVISION.
