Tyndall, John, 1820-1893 · New York : Appleton · leaf 168
are executed with about 6J times the rapidty of the vibrations of the rod swinging as a whole.Again I draw the bow; the note rises in pitch, the ser-rations run more closelv together, forming on the screena luminous ripple more minute and, if possible, more 1 Chladni also observed this compounding… … 162 SOUND. Fio. 5T.
Sound
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