Ball, W. W. Rouse (Walter William Rouse), 1850-1925 · London, Macmillan · leaf 118
have been described in H. Dircks Ferpetuum Mobile,London, 1661, 2nd edition, 1870. CH. V] MECHANICAL KECREATIONS 96 the product of the weight of the bullet and its distance fromthe vertical through G, The idea of the constructors of such machines was that, asthe bullet in any compartment would roll… … the moments of the weights of the bullets on the right wouldbe greater than the sum of the moments of those on the left.Thus the wheels would turn continually in the same directionas the hands of a watch. The fallacy in the argument isobvious. Another large group of machines for producing…
Mathematical recreations · Geometry · Astrology · Space and time · Matter · Magic squares
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