Elementary treatise on electricity and magnetism : founded on Joubert's "Traité élémentaire d'électricité" (1909)
Foster, G. Carey (George Carey), Porter, Alfred William, 1863-1939, Joubert, Jules François · London : Longmans · leaf 563
e place of the preceding one. The indentations are the smaller and the current the moreuniform the greater the number of subdivisions of the commutator. 425. Displacement of the Brushes—Angle of Lead.—If the machine turns uniformly on open circuit, the facts are in exactagreement with the preceding… … Moreover, for a con-stant strength of the field, thedifference of potential is pro-portional to the speed of rotationof the ring. If the circuit is closed otherphenomena are produced ; strongsparks pass between the brushesand the commutator-strips whichthey leave. These sparks wouldsoon destroy the…
Electricity · Magnetism
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