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 132
Fig the carriers of the replenisher. The influencing conductors arerepresented by two strips of tinfoil fixed to the centre of the paperarmatures. They are connected with two small brushes whichtouch the studs just before their passing under the combs; thesebrushes play the same part as the two…
Electricity · Magnetism
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