A natural philosophy : embracing the most recent discoveries in the various branches of physics, and exhibiting the application of scientific principles in everyday life .. (1899)
Quackenbos, G. P. (George Payn), 1826-1881 · New York, Cincinnati [etc.], American book company · leaf 175
uum is formed within the bel-lows, and the atmospheric pressure forcesthe bellows. the valve up and drives in a portion of the external air.The same principle is involved in the act of breathing. The cells in theiungs are expanded by muscular action, a vacuum is thus formed, and thepressure of the… … THE 8TTCKEB. 405. The Sucker, a play-thing used by-boys, shows the force of atmospheric pres-sure. It consists of a circular piece ofleather with a string attached to the mid-dle. The leather, being first wet so that itmay adapt itself to the surface, is pressedfirmly upon a flat stone. The string…
Physics
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