Introductory course of natural philosophy for the use of schools and academies. Ed. from Ganot's popular physics. By William G. Peck (1869)
Ganot, Adolphe, 1804-1887, Peck, William Guy, 1820-1892 · New York A.S. Barnes · leaf 131
eingmade for the weight of the mercurywhich is forced up into the tube. Theinstrument having been graduated, itsuse is evident. When it is desired toascertain the tension of the steam inthe boiler, the cock is turned, and theheight to which the mercury ascendsin the tube, indicates the tension… … Fig. S&.It is not so reliable as these described. Jii-—application to pumps and other machines. The Air-pump. 125. An Air-pump is a machine for exhausting the airfrom a closed space. The air-pump was invented by Ottovon Guericke, in 1650. A perspective view of one of the most common forms of…
Physics
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