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
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… … Fig. 283. which the effect of repulsion may give rise to a continuous rotatorymotion. In that shown in Fig. 284, a copper disc, b, mounted ona spindle, rotates rapidly when it is placed excentrically in refer-ence to the alternating pole, and when another disc, a, partlyscreens the first. If the…
Electricity · Magnetism
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