Fluids > Fluid Statics > Atmospheric Pressure
DCS# 2B30.30

MAGDEBURG HEMISPHERES

ping pong ball in funnel

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.