Steam engines, prepared in the Extension division of the University of Wisconsin (1919)
Shealy, Edward Marvin · New York, McGraw-Hill · leaf 77
Fig. 47. number of inches of mercury which it will support. If the topend of the glass tube in Fig. 46 is opened so the atmosphericpressure can act on the surface of the mercury in the tube, themercury will immediately fall to the same level as that in thecup. If, now, the top of the glass tube is… … E 5
Steam-engines
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