Tyndall, John, 1820-1893 · New York : Appleton · leaf 97
with its associated rarefactionconstitutes, as already stated, a sonorous wave. In waterthe length of a wave is measured from crest to crest;while, in the case of sound, the wave-length is the distancebetween two successive condensations. The condensationof the sound-wave corresponds to the crest,… … a, b, <?, d, the rarefactions of the waves issuing from thefork a b : the wave-length would then be measured froma to b, from b to c, or from c to d. § 6. Definition of Pitch : Determination of Bates of Vibration. When two notes from two distinct sources are of thesame pitch, their rates of…
Sound
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