Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 349
ey are led tothe external circuit and backat ?/. This condition alwaysexists, no matter how fastthe rotation; for it will beseen that as each looj) ro-tates into the position where the direction of its current reverses, itpasses a brush and therefore at once becomes a part of the ciicuit onthe… … Fig.310. A four-pole direct-currentgenerator DYNAMOS 301
Physics
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