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)
water actingupon another through an interveningcolumn of air. There are many mod-iticat.ions in its form, the one repre-sented illustrating the princijile ratherthan the deception. This fountain may be considered theoldest pressure-engine known, a vol-ume of air acting as the piston.… … HYDRAULICS. 131) prevented from ]5assing through the bulb, T, and so up into the bulbL, by the compressed air intervening between the water in T and in L.The water in L, through the medium of the compressed air, is nowpressed with a force equal to a column of water extending from itssurface in T,…
Physics · Astronomy
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