Lynde, Carleton John, b. 1872 · New York, Macmillan · leaf 66
de of iron, and the edges are ground smooth, sothat when the two halves are placed together the joint is air-tight. When there is air inside, the hemispheres can be pulledapart with ease; but when the air is pumped out, a large forceis required to separate them. When the hemispheres are filled… … III FIG. 33. — Illustrating atmospheric pressure. there is left only the air outside which is pressing the hemi-spheres together. In order to separate them then a force mustbe exerted equal to the pressure of the atmosphere on the outside.If a tumbler is filled with water, then covered with a…
Physics · Home Economics
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
