. Bulletin. Science. Figure 51.—Baudot's multiplex telegraph transmitter keyboard. The cadence counter on top of the case enabled the operator to transmit at the correct speed. From La Lumiere electrique, 1882, vol. 6, p. 81. The line of electro-acoustic experimentation that resulted in the telephone started with the discovery that an electric current could produce those mechani- cal vibrations that we hear as sound. As early as 1837, Charles Page found that when an electromagnet. Figure 52.—Baudot's multiplex transmitter distributor com- inutator. From La Lumiere electrique, 1882, vol. 6, p.
. Bulletin. Science. Figure 51.—Baudot's multiplex telegraph transmitter keyboard. The cadence counter on top of the case enabled the operator to transmit at the correct speed. From La Lumiere electrique, 1882, vol. 6, p. 81. The line of electro-acoustic experimentation that resulted in the telephone started with the discovery that an electric current could produce those mechani- cal vibrations that we hear as sound. As early as 1837, Charles Page found that when an electromagnet. Figure 52.—Baudot's multiplex transmitter distributor com- inutator. From La Lumiere electrique, 1882, vol. 6, p. 60. 314 BULLETIN 228: CONTRIBUTIONS FROM THE MUSEUM OF HISTORY AND TECHNOLOGY. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off
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