Tyndall, John, 1820-1893 · New York : Appleton · leaf 87
us Works, published in 1705, by Richard Waller, Secretaryof the Royal Society: In July the same year he (Dr. Hooke) showed a wayof making musical and other sounds by the striking of the teeth of severalbrass wheels, proportionally cut as to their numbers, and turned very lamround, in which it was… … MUSICAL SOUNDS PRODUCED BY TAPS. 81 a lowering of the pitch of the note. By checking the mo-tion still more, the pitch is lowered still further. We arehere made acquainted with the important fact that thepitch of a note depends upon the rapidity of its pulses.1At the end of the experiment you hear…
Sound
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