A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 456
ine Electro-Metallurgical Deposit. —(See Deposit, Electro-Metallurgical, Reg-uline?) Rejuvenation of Luminescence.—(See Luminescence, Rejuvenation of.) Relative Calibration.—(See Calibration^Relative.) Relay.—An electro-magnet, employed insystems of telegraphy, provided with contactpoints placed on… … Fig- 477 ■ Telegraphic Relay. The use of a relay permits much smaller cur-rents to be used than could otherwise be done,since the electric impulses, on reaching a distantstation, are required to do no other work thanattracting a delicately poised movable contact,and thus, by throwing a local…
Electricity · Electrical engineering
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