Tyndall, John, 1820-1893 · London : Longmans, Green · leaf 346
. Lighted by a taper,a series of low parallel liames are thus produced. At a ARTIFICIAL ACOUSTIC CLOUDS. 32; sliort distance from one end of the gridiron is placed aconcertina reed a, which when sounded throws the sensitiveflame c into violent agitation. On igniting the gas, theflame is immediately… … Permitting the reed to remain unchanged, the sensitiveflame is now removed to a position behind the reed, as infig. 161. Here the sound is so much enfeebled that tlieflame can burn there tranquilly when the reed is sound-ing. Things being in this condition, the gas is lightedand the air above it…
Sound
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