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 422
th of thecurrent equivalent to the electro-magnet and that induced by it in law, the two currents attract if they are in the same direction, and repel if they are opposite. 335] ELIHU THOMSONS EXPERIMENTS 399 In Figs. 282 and 283, two sine curves, A and a, have beentraced with the same period, but… … Fig. 282. if it is negative. When the difference of phase is equal to - A (Fig. 282), the attraction and repulsion are equal both in intensity and in duration, and the resulting effect is therefore nothing. But if the difference of phase exceeds -, and it always does exceed this value, repulsion…
Electricity · Magnetism
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