Tyndall, John, 1820-1893 · New York : Appleton · leaf 95
r, the amplitude hasbecome zero, and the sound, which depends upon the am-plitude, ceases altogether. To M. Lissajous we are indebted for a very beautifulmethod of giving optical expression to the vibrations of atuning-fork. Attached to one of the prongs of a very largefork is a small metallic…
Sound
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