Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
mpressedby the water being driven into the small open-ing on the lower side of the ball, which, of course, increases the weight,or rather diminishes the buoyant effort of the toy, and thus causes itto sink to the bottom. If the pressure on the cap be removed, theelasticity of the air in the ball… … CHAPTEK VII (CHART NO. 2.)PNEUMATICS. 119. Definitions.—Pneumatics treats of the properties of elasticfluids; which may be divided into two classes, gases and vapors. In gases, the molecular force of repulsion (22, 23, 88, 91) prevailsover the force of attraction; and in permanent gases this force…
Physics · Astronomy
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