THERMODYNAMICS - GAS LAW - CONSTANT VOLUME NC State University Faculty Access

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Constant Volume Bulb
# 4E30.10


Description: The gauge measures the pressure in the sealed sphere in pounds per square inch. Atmospheric pressure is 14.7 lbs/in2. Read the pressure when the bulb is immersed in boiling water and ice water.

Purchased/Built: purchased

Setup Time: 5 min

Quant. in Demo Room: 1

Source: Central Scientific

Demo References
The Video Encyclopedia of Physics Demonstrations Disc 16-02 A constant volume sphere with a pressure gauge is shown at room temperature and immersed in ice water and boiling water baths.
Meiners 25-2.7 A Bourdon pressure gauge is attached to a toilet-tank bulb filled with helium and immersed in boiling water, dry ice, and liquid nitrogen.
Freier and Anderson Ha-4 Immerse a tank bulb with an attached pressure gauge in various temperature water baths.

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