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 547
FiG. 351. Fig. 352. taneously ; the two receivers then give the same signal under theinfluence of the same current if the two batteries have theiropposite poles to the line, and under the influence of a localcurrent if they are arranged in the same direction—that is, so thatthe same poles aie…
Electricity · Magnetism
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