Sketch of Prof. John Le Conte ; [and] Sensitive flames and sound-shadows (1889)
Stevens, W. Le Conte (Walter Le Conte), 1847-1927 · New York : D. Appleton · leaf 23
water in the neighbor-hood. A stout glass bottle was suspended in the water about afoot in the rear of one of these piles (Fig. 1), within the geomet- i6 SENSITIVE FLAMES AND SOUXD-SHADOWS. ric shadow determined by lines supposed to be drawn from tbecartridge forty feet horizontally away. The… … Fig. I. water, were similarly exposed in various directions around thepile, and with the same result—destruction, except when withinthe protecting shadow. The experiments were varied by immers-ing stout glass tubes (Fig. 1), incased in thick paper, horizontallyacross the direction of the sound-rays…
LeConte, John, 1818-1891 · Sound-waves
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