The inventions, researches and writings of Nikola Tesla : with special reference to his work in polyphase currents and high potential lighting (1894)
Martin, Thomas C, Tesla, Nikola · The Electrical Engineer · leaf 472
INVENTIONS OF NIKOLA TESLA . 452 imum the loss of power due to Foucault currents and to the change of polarity , and also to shorten as much as possible the length of the inactive wire wound upon the armature core . It is well knowm that when the armature is revolved between the poles of the field… … Fig . 271 . a waste of power . Owing to the mutual action of the lines of force , the magnetic properties of iron , and the speed of the dif ferent portions of the armature core , these currents are generated principally on and near the surface of the armature core , dimin ishing in strength…
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