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Quantity
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This energy transformation is sure to capture your students' attention! Hold the glass vessel in your hand, and your body heat causes the liquid inside to boil and shoot into the top bulb! Assorted colors and styles.
Reviews
4.7
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These are great for teaching phase change.
Read my paper: The handboiler and how it does not work These are great for teaching phase change. Less great for teaching Charles' Law which they do not do.
J
James · December 20, 2023
Works well, but very delicate - that's why I'm giving 4 stars. Being delicate is perhaps unavoidable since robust heat transfer is desired. Could it be made from acrylic? Kids should be well-behaved or they may get a handful of broken glass.
