Elementary treatise on electricity and magnetism (1903)
Foster, George Carey, 1835-1919, Joubert, Jules François, 1834-1910. Traité élémentaire d'électricité, Porter, Alfred William, 1863- joint author · London, New York, Longmans, Green, and co. · leaf 377
354 MAGNETISATION BY CUKRENTS [286- in the intervening space. This is the arrangement which Ruhm-korff used in his electro-magnet (Fig. 244). The two coils, s and s,are placed opposite each other with their axes in -the same line,and they are connected by a sliding yoke, e e, by which theycan be… … Fig. 244. In most cases the section of the yoke is made too small, and manylines of induction escape at P and e. In order to get fields either uniform or variable, the ends ofthe cores are provided with flat discs (Fig. 245), or conical (Fig.246) or bevelled pieces (Fig. 247). The wire makes about…
Electricity · Magnetism
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