Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 47
Otto von Glericke (1602-168G) German physicist, astronomei-, and man of affairs; mayor of Mag-deburg; invented the air pump in 1650, and performed manynew experiments with liquids and gases; discovered electrostaticrepulsion; constructed the famous Magdeburg hemispheres whichfour teams of horses… … Tiiii Mercury-Diffusion Air Pump The latest developmoit of the air pump is shown in the accompanjing diagram.It is over a million times more effective than an air pump of the mechanicalkind invented by Von Giiericke. The principle is as follows: Tlie jet of waterpouring out through ./j from an…
Physics
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