Electricity experimentally and practically applied; a book for the beginner and for the practical man, principles, experiments, practical applications and problems (1910)
Ashe, Sydney Whitmore · New York, D. Van Nostrand company · leaf 51
ELECTRO-MA GNETISM 29 … Fig. 43. Limit Switch. (West-inghouse.) date the greatest number of lines of force. With a givenmagnetization 10,000 times as many Hnes of force maypass through a circuit of modern iron than if air alonewere present. The principle of the solenoids attracting aniron core is widely used in…
Electricity · Electrical engineering
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