Tyndall, John, 1820-1893 · London : Longmans, Green · leaf 152
rod, are executed with about 6^ times therapidity of the vibrations of the rod swinging as a whole.Again I draw the bow; the note rises in pitch, the•serrations run more closely together, forming on thescreen a luminous ripple more minute, and, if possible, Chladni also observed this compounding of… … 132 LECTURE ly. Fig. 57.
Sound
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