A textbook on mechanical and electrical engineering (1898)
International Correspondence Schools · Scranton : International Textbook Co., [1898-99] · leaf 450
long as the hemispheres contain air, theycan be separated with ease; but when theair in the interior is pumped out bymeans of an air pump, they can be sepa-rated only with great difficulty. Theforce required to separate them will beequal to the area of the largest circle ofthe hemisphere (projected… … Fig. 195. 1069. The W^eight Lifter.—The pressure of theatmosphere is very clearly shown by means of an apparatuslike that illustrated in Fig. 19(3. Here, a cylinder fittedwith a piston is held in suspension by a chain. At the top ofthe cylinder is a plug A, which can be taken out. Thisplug is…
Electrical engineering · Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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