Snow, Benjamin Warner, 1860- · Madison, Wis. · leaf 203
e pressure of one atmosphere by theweight of the column of mercury DE, and this may be read atonce from an attached scale. The closed-arm manometer, Fig. 124, consists of a bent tube asbefore, but in this case the arm B is closed. The lower part ofthe tulie is then filled with mercury, and air or… … Fig. 123. The open-arm manometer. THE SIPHON. 199
Physics
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