Tyndall, John, 1820-1893 · London : Longmans, Green · leaf 276
perceptible motion of theinterior of the flame may be noticed when a shrill whistleis blown close to it. But by turning the cock more fullyon, the flame is brought to the verge of flaring. And now,when the whistle is blown, the flame thrusts suddenly outseven quivering tongues, fig. 127. The moment… … ible to the loudest sound which would be tolerable here.The flame is fed from a small gas-holder.^ Increasinggradually the pressure, a slight flutter of the edge of theflame at length answers to the sound of the whistle. Turn-ing on the gas until the flame is on the point of roaring,and blowing the…
Sound
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