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Magdeburg Hemispheres
# 2B30.30


Description: Make sure the valve is open. Turn on the vacuum pump to evacuate the hemispheres. Shut the valve and remove the hose. Have two students try to pull the hemispheres apart.

Instructions:

Parts: vacuum pump, magdeburg hemispheres

Purchased/Built: purchased

Setup Time: 5 min

Quant. in Demo Room: 1

Demo References
The Video Encyclopedia of Physics Demonstrations Disc 11-12 An evacuated Magdeburg hemisphere set supports a large stack of weights.
Hilton M-22b.3 Picture of two Magdeburg hemispheres.
Freier and Anderson Fd-2 Evacuate Magdeburg hemispheres and try to separate them.
The Physics Teacher TPT 3(6),285 Separate the hemispheres by placing in a bell jar and evacuating.
The American Journal of Physics AJP 36(3),ix Pump out flat plates separated by an o ring and hang weights.

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