Tyndall, John, 1820-1893 · London : Longmans, Green · leaf 393
they producefollow each other with great rapidity. The flame con-nected with the central membranes dances in time to thebeats. When brought nearer to unison, the beats are Described in Lecture V.B B 370 LECTUEE VIII. slower, and the flame at successive intervals withdraws itslight and exhales it. A… … tain places, but for the most part broken into distinctimages of the flame. The continuous parts con-espond tothe intervals of interference where the two sets of vibra-tions abolish each other. Instead of permitting both pipes to act upon the sameflame, we may associate a flame with each of them.…
Sound
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