Tyndall, John, 1820-1893 · New York : Appleton · leaf 89
the lead, the vibrations are rendered more rapid, and thetaps link themselves together to a deep musical tone.A second rocker, which oscillates more quickly than thelast, produces music without any other pressure than that Fig. 17. … due to its own weight. Pressing it, however, with thefile, the pitch rises, until a note of singular force andpurity fills the room. Relaxing the pressure, the pitch MUSICAL SOUNDS PRODUCED BY PUFFS. 83 instantly falls ; resuming the pressure, it again rises; andthus by the alternation of the…
Sound
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