Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 564
ightly out of tune by means of aslider, 8 (Fig. 361), which opens a hole at thetop of one of the pipes, very strong beats maybe produced. When the pipes are exactly intune, and attached to the same wind chest, thenote obtained from the two sounded togetheris relatively feeble, for the reason that… … 554 PROPAGATION OF SOUND-WAVES. by a half wave-length, and hence annul each other. A featherplaced at the mouth of either will show that the air makesessentially the same vibrations as if one pipe were soundedalone. If a screen be interposed between the mouths of thepipes, the sound will be…
Physics
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