Tyndall, John, 1820-1893 · New York : Appleton · leaf 89
u may readily count them. Buta mass of metal differently shaped may be caused to 1 Galileo, finding the number of notches on his metal to be great whenthe pitch of the note was high, inferred that the pitch depended on the rapidi-ty of the impulses. 82 SOUND. vibrate more briskly, and the taps to… … 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.
Sound
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