Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 549
Vibrations of tuning fork. perforated with holes equal in number to those in thecylinder top, but the holes are not perpendicular, theyslope in opposite directions. So when the air is forcedthrough the holes in the top of the cylinder it impingesupon one side of the holes in the rotating disc, and…
Scientific recreations
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