e, holding the mouth of the rubber pipeupward, and place it in the jar. Press in the stopper, andread the height of the mercury. Increase the pressure on thesurface of the mercury, by blowing at T or by the use of abicycle pump. Suck air from T, or use an air-pump. T may be attached to the air-pump… … Fig. 23. dish of water, can be used (Fig. 23). The test-tube shouldhave a paper scale attached, or be marked with a cross-pencil.Read the height of the mercury and the length of the aircolumn in the test-tube. The pressure on the air in the test-tube is nearly the same as that on the mercury, being…
Physics
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