Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 349
. When one of the stationssignals to another the third also receives the signal, sinceall the relays are in series. The function of the smallcut-out switch on the transmitter key is to preserve the con-tinuity of the line since it is in series with it, as shown inFig. 301. 315. Electric Waves.—The… … THE INDUCTION COIL, 331 or expands outward in all directions, but with a decrease incurrent strength, the field returns again toward the conductor.If instead of a slowly increasing and decreasing current inany circuit we consider electric oscillations of very highrapidity, as the discharge of an…
Electricity · Magnetism
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