The seven follies of science; to which is added a small budget of interesting paradoxes, illusions, marvels, and popular fallacies. A popular account of the most famous scientific impossibilities and the attempts which have been made to solve them. With numerous illustrations (1912)
Phin, John, 1830-1913 · New York, D. Van Nostrand company · leaf 60
lem of the perpetual mo-tion. It was goblet-shaped, lessening gradually towardsthe bottom until it became a tube, bent upwards at c andpointing with an open extremity into the goblet again. He PERPETUAL MOTION 47 reasoned thus : A pint of water in the goblet a must morethan counterbalance an ounce… … Fig. 9. up. He was confounded when a trial showed him thesame level in a and in b. This suggestion has been adopted over and over again bysanguine inventors. Dircks, in his Perpetuum Mobile,tells us that a contrivance, on precisely the same principle,was proposed by the Abb6 de la Roque, in Le…
Scientific recreations · Geometry
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