Tyndall, John, 1820-1893 · New York : Appleton · leaf 373
es, you observe, dance within their tubes in timeto the beats. As already stated, these beats cause asilent flame within a tube to quiver when the voice isthrown to a proper pitch, and when the position ofthe flame is rightly chosen, the beats set it singing.With the flames of large rose-burners,… … pipes are now mounted on our wind-chest, Fig. 155, eachof which, however, is provided at its centre with a mem-brane intended to act upon a flame.1 Two small tubeslead from the spaces closed by the membranes, and uniteafterward, the membranes of both the organ-pipes beingthus connected with the…
Sound
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