Stewart, Balfour, 1828-1887 · Toronto : James Campbell · leaf 46
<im. … Fig. 15- Experiment 30.—Here are two hollow half-sphereswhich exactly fit oh to one another. Now let us pressthem together and shut the stopcock, and you willnaturally ask why does not the pressure of the air 38 SCIENCE PRIMERS. [properties—___—^— ■ 1 . hold tbem firmly together ? The reason is…
Physics
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