Fluids > Fluid Statics > Atmospheric Pressure
DCS# 2B30.30
MAGDEBURG HEMISPHERES
APPARATUS
magdeburg hemispheres
202-16-D
vacuum pump
001
tubing
202
DESCRIPTION
Evacuate sphere and have two students try to pull them apart. The 4.5" diameter hemispheres would require >200 lb to separate them. The 3" diameter ones would require >100 lb.
NOTES
Vacuum grease may be needed for a good seal.