Glass vessel with ground-glass sealing joints for demonstrating the expansion of air when heated.
The U-tube is filled with water at room temperature and the water levels are marked. Even the heat from a hand is enough to cause the air in the flask to expand so that the water levels in the U-tube change visibly.
Height: approx.230 mm
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![Ball with Ring, 1000831 [U8442500], Thermal Expansion](/thumblibrary/U8442500/U8442500_01_140_140_Ball-with-Ring.jpg)
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