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 245
Fig. 141. li... MJ. Hlumiuum, the brush ha> hut an (|)liciiu-ral existence, and can-not, unfortunately, be indetinitcK |n-e>crved in it^ most sensi-tive state, even in a bulb devoid of any conducting electrode.In studying the phenomenon. I»\ all nHaii> a hulii having noleading-in wire…
Electric currents, Alternating · Electrical engineering
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