Gage, Alfred P. (Alfred Payson), 1836-1903 · Boston, London, Ginn · leaf 623
circuit are Virtually 600 ETHER DYNAMICS. in tlie relation of a dynamo and a motor. The transmitterbeing in itself a diminutive dynamo, of course no battery isrequired in the circuit. Connect in circuit two such tele-phones, and the apparatus is ready for use. When a person talks near the disk of… … Fig. 486. as it approaches the magnet, and enfeebled as it recedes.This fluctuating magnetic force will of course induce currentsin alternate directions in the neighboring coil of wire. Thesecurrents traverse the whole length of the wire, and so passthrough the coil of the distant instrument. When…
Physics
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