Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 475
hony, which we believedate from early August, 1876, resulted in the invention of the magneto-electric telephone, as distinguished from the electro-magnetic telephone;his later inventions produced his system of electro-static telephony. In the magneto-electric telephone, the voice acting on a… … Fig. 1.—Tlie Telephone. towards and from the magnet pole and its insulated coil, produce elec-trical currents in the coil. These currents, which flow alternately inopposite directions, are caused to traverse a conducting wire and toalternately strengthen and weaken the magnetism in a similar…
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