UIUC Physics
Lecture Demonstration
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Demo # 574
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Liquid Nitrogen and Balloon
Description:
When a balloon is cooled, the air inside the balloon is also cooled. Cooler air has a smaller volume, and thus we can see that the balloon shrinks.
Physics Concept:
- Thermodynamics and Statistical Mechanics
- Gas Laws
- Charles' Law
The demonstration takes about 2 minutes to perform.