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This Hand Bubbler magically demonstrates energy transfer in a cool, fun way! Hold it at the bottom and watch the liquid bubble to the top. Hold the bottom chamber in your hand and watch as your body heat warms the liquid. As it starts to vaporize, it expa
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Technical Details
- Magically demonstrates energy transfer- Hold the bottom for bubbling action
- 6 1/2" tall
- Assorted colors
- Made of glass; not intended for use by children
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