PIRA 4E20.40- Constant Temperature: Balloon in a Vacuum Chamber

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Photo Shows the Demonstration Used at U.T. Austin

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Instructions:

Turn on vacuum pump using the switch on the back of the pump.

Once the balloon is at its maximum size and touching the sides of the jar, turn off pump.

Try a cup of fresh marshmallows. Bring your own.

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Concepts Conveyed

• A partially blown up balloon is inside a sealed bell jar.
  
• As the pressure in the chamber decreases, the balloon expands.
  

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Demo Staff Instructions

Plug in the vacuum pump and make sure the valve is turned all the way right.

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Last Updated 2022 - University of Texas at Austin Physics Dept. - All Rights Reserved