The outlines of physics: an elementary text-book (1897)
Nichols, E. L. (Edward Leamington), 1854-1937 · New York, The Macmillan Company; London, Macmillan & Co., Ltd. · leaf 158
; Nature, Vol. 51,p. 491.) Fig. 122. PBOPEBTIES OF GASES 143 129. Manometers.—The barometric column may alsobe used to measure changes of pressure artificially pro-duced. If, for example, the cistern of a barometer beplaced upon the plate of an air pump with the tube pro-jecting through the neck of… … Fig. 123. Fig. 124. Fig. 125. To any such device for measuring artificial pressures, thename manometer is applied. For the measurement of pressures less than one atmos-phere, the form of manometer shown in Fig. 124 is fre-quently used. It is a barometer in which the vacuumabove the mercury column…
Physics
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