Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 154
^giving it a twisting motion. One end of the rubber tube isplaced very near the base of the candle flame, and the otherend, which is provided with the paper mouthpiece, is placedbefore the mouth and a sound is uttered which causes theair contained by the rubber tube to vibrate and impart itsmotion… … Simple Method of Producing and Viewing Vibrating Flames. the flame will be seen. These images are combined in aseries which, with a certain degree of accuracy, representthe sound waves by which the fluctuations of the flame areproduced. To show that these images result from a vibrating flame,it is…
Physics · Lantern projection · Electric apparatus and appliances
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