Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 637
engel.s pump, and apractically perfect vacuum is obtained, like the Torricellianvacuum. The Torricellian vacuum is the empty space abovethe column of mercury in thei^° \^ barometer which we will proceedto describe. Air has a certainweight or pressure which is suf-ficient to raise a column of… … THE BAROMETER, 75 fluids, of which we shall read more when we come toconsider Water. So the two columns of mercury are inequilibrium. (See A.) Now stop the arm a with a cork,and take out half the mercury. It will remain in onearm only. Remove the cork, and the fluid will fall in both
Scientific recreations
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
