Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 46
in ink upon pajier wound about a drum. Chackwork insidethe drum inakes it revolve once a week. A somewhat different form ofthe instrument is used bv aviators to record altitude. QUESTIONS AND PROBLEMS 1. Why does not the ink run out of a pneiuuatic inkstand like thatshown in Fig. 30? 2. If a… … 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…
Physics
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