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DCS# 2B30.30NWU# F-14 Location:    1B1
title: Magdeburg Hemipheres
aka: suction cups and lift a stool

 Classic metal hemi-spheres are placed together and evaculated with a vacuum pump.  They are very stongly held together by atmospheric pressure.

  Similar demo can be done with two "dent pulling" suction cups.

   A stool can be lifted by a sheet or rubber with a handle.

    Would this work on the moon? (ie. in a vacuum?)
     What does the force depend on?
     Would the force be higher or lower at the top of a mountain?
pix of set up