Tyndall, John, 1820-1893 · New York : Appleton · leaf 374
mbranes of both the organ-pipes beingthus connected with the same flame. By means of thesliders, s, s, near the summits of the pipes, they are eitherbrought into unkon or thrown out of it at pleasure. Theyare not at present in unison, and the beats they producefollow each other with great rapidity.… … slower, and the flame at succesive intervals withdraws itslight and appears to exhale it. A process which remindsyou of the inspiration and expiration of the breath is thuscarried on by the flame. If the mirror, m, be now turned,the flame produces a luminous band—continues at certainplaces, but for…
Sound
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