Ripper, William, 1853-1937 · London, New York [etc.] : Longmans, Green and co. · leaf 232
Fig. 235. Fig. 23G. the subnormal ah = h is constant for all positions of thf> weight W on 2l6 STEAM-ENGINE THEORY AND PRACTICE. the parabolic curve XY, so that if W move in a parabolic path, theheight li will be constant. An approximate equivalent to this is obtained by the use of…
Steam-engines
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