The inventions : researches and writing of Nikola Tesla, with special reference to his work in polyphase currents and high potential lighting (1894)
Martin, Thomas Commerford, 1856-1924, Tesla, Nikola, 1856-1943 · New York : The Electrical Engineer · leaf 416
inary incandescent lamp bulb. The primary, usuallyconsisting of a few turns of thick, well-insulated copper sheet wasinserted within the tube, the inside space of the bulb furnishingthe secondary. This form of apparatus was arrived at after someexperimenting, and was used principally vdt\\ the view… … Fk;. 210. there was no special difficulty in exciting a luminous circk orcylinder in proximity to the primary. As to tlie number of turns, 1 cannot <juite undiTstand whyProf. .1. .1. Thomson sliouid think that a few turns wwv »|uitesutHcient, hut lest I should impute to him an opinion hi maynot…
Electric currents, Alternating · Electrical engineering
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