Philosophical instructor, or, Webster's elements of natural philosophy : subdivided into principles and illustrations ; intended for academies, medical schools, and the popular class-room (1824)
Eaton, Amos, 1776-1842, Webster, John, fl. 1804-1824 · Albany : Printed by Websters and Skinners ... · leaf 76
l forcethe fluid to b, half way up the opposite tube. Fromthis it appears, that the space occupied by a certainquantity of air, under different pressures, is recipro-cally proportional to the force of the pressures.Therefore, as the pressure of the upper parts of theatmosphere upon the lower… … 74 ELASTICITY OF THE ATMOSPHERE. Now, supposing the atmosphere to diminish in,density exactly in proportion to the different heights,the relative density of the air may he found at anygiven height. Thus, it, is calculated that at the heightof 3| miles, the atmosphere is about twice as rare ason the…
Physics
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