Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 348
xternal circuit throughthe same brush. While a cur-rent from such a coil and com-mutator as that shown in thefigure would always flow in tliesame direction through the ex-ternal circuit, it would be of apulsating rather than a steadycharacter, for it would rise to amaximum and fall again to… … Fig. 313. Two-pole direct-currentdynanio with ring armature
Physics
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