Magdeburg
Hemispheres
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PIRA Classification: 2B30.30
Description: The hemispheres are actually discs with a small empty
volume between them. The hemispheres are sealed with an O-ring and are
evacuated with a pump or by sucking on the hose (more dramatic). When the
system is evacuated, the hemispheres cannot be separated (easily). An
additional demo would be to place the hemispheres in a bell jar and
evacuate that. The hemispheres should fall apart.
Special Instructions: Make sure the valve is closed while still
pumping on the hemispheres.
Ideally For: Phys 1101, 1201
Condition: OK
Setup time: 2 minutes
Safety Issues: None