Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 155
n fact, if the experimentbe frequently repeated the illusion will become less andless marked. EXPERIMENT IN SOUND—ACOUSTICS. Sound is a sensation which affects our ears ; it is pro-duced by a cause exterior to the organ itself—generallyby vibration of a body. This vibration is transmitted bythe… … 109.—Wooden Whistle, which a Lad may make for Himself. as when a bow of a violin is drawn across the strings ;and by twanging the strings of an instrument. It is easy to prove that sound is transmitted in aperceptible space of time from one place to another.When at a distance we see a man hammering…
Scientific recreations
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