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Bell in a Vacuum
# 3B30.30


Description: Switch on the vacuum pump. Connect the battery to the bell. It takes 2 minutes to pump down to a good vacuum.

Purchased/Built: purchased

Setup Time: 5 min

Quant. in Demo Room: 1

Demo References
Hilton S-3a Air is pumped from a bell jar as a battery powered bell rings inside.
The Video Encyclopedia of Physics Demonstrations Disc 10-09 Place an electronic siren with a LED in series in a bell jar.
Sutton S-52 Ring a bell in an evacuated bell jar. Other methods and hints.
Sutton S-53 You can hear a bell in a closed jar while air is present.
Freier and Anderson Sh-2 A doorbell is placed in a bell jar which is then evacuated.

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