Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 69
aily observation that adrop of soapy water escaped from the tip of the fingerenlarges itself in the basin in the form of a perfect ring,which slowly grows larger as it reaches the bottom. 5 2 DENSITY, I-IYDROSTATICS, ETC. These observations are applicable to the phenomena ofwhirling rings; they are… … Fig. 41.—Crowns of Tobacco Smoke (after picture by Branwer in the LouVre). projecting puffs from a cigarette through a tube. Butsome precautions are necessary to assure the success ofthe experiment. Any draught must be avoided, and toprevent the action even of the air currents, which ascendin the…
Scientific recreations
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