Elementary treatise on electricity and magnetism : (1905)
Foster, G. C. (George Carey), 1835-1919, Joubert, J. (Jules François), 1834-1910, Porter, Alfred W. (Alfred William), 1863-1939 · London ; New York ; Bombay : Longmans, Green, and Co. · leaf 423
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 intensityand in duiation, 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 lise to a continuous rotatorymotion. In that shown in Fig. 284, a copper disc, b, mounted ona spindle, lotates lapidly 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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