Tyndall, John, 1820-1893 · New York : D. Appleton and company · leaf 271
In this way the observation of Dr. Le Conte is easilyand strikingly illustrated; in our subsequent, and far moredelicate experiments, the precaution just referred to is stillmore essential. § 9. Experiments on Flames from Circular Apertures. A long flame may be shortened and a short one… … ing the whistle, the long flame becomes short, forked, andbrilliant, as in Fig. 127; while the forked flame becomes TALL FLAMES. 263 long and smoky,0as in Fig. 128. As regards, therefore,their response to the sound of the whistle, one of theseflames is the complement of the other. In Fig. 129 is…
Sound
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