Stewart, Balfour, 1828-1887 · Toronto : James Campbell · leaf 48
heet o[paper—the pressure of the air not only acts on thetop of the sheet pressing it down, but it acts just asstrongly on the bottom of the sheet pressing it up, andin consequence the sheet of paper can move aboutfreely just as if there was no pressure of the atmo-spheric ocean upon it at all. And… … Experiment 30.—Here are two hollow half-sphereswhich exactly fit on to one another. Now let us pressthem together and shut the stopcock, and you willnaturally ask why does not the pressure of the air 3$ SCIENCE PRIMERS. [properties hold them firmly together ? The reason is that thereis also air…
Physics
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