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Scientific American, Vol. 84, No. 21 (1901) (1901)
leaf 3
sie ASIN so, were not the tube struck in order to decohere them. Hence the necessity of ‘certain complications in order to obtain the shock automatically immediately after the passage of the wave. According to M. Popoff’s experiments, this is not necessary with the telephone. The filings, under the… … soon as the transmitting station operates there are very distinctly heard sounds that are now short and now Fig. 1.—GENERAL VIEW OF THE POPOFF-DUCRETET long, and that correspond to the signals of the Morse TRANSMITTER, © 1901 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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