Ripper, William, 1853-1937 · London, New York [etc.] : Longmans, Green and co. · leaf 241
224 STEAM-ENGINE THEORY AND PRACTICE. If, however, the speed oftendency is for the ball (Fig. … Fig. 251. rotation of the disc increases, then the252) to maintain its original speed andto lag behind relativelyto the disc, which isequivalent to a move-ment in the directionof the arrow D, or inthe direction oppositeto D if the speed ofrotation of the disc de-creases. This move-ment of the ball…
Steam-engines
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