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 303
Fig. IGl. … \-\i. k; frequencies obtained from ;iii idtfi-iiatnr ;i> lu-i-c ummI —a stage atwliicli the discharge tliK^ not jtass bitwcen two eU-ctrodcs in anarrow tube, each oi these being connettid to one of the termi-nals of the coil, but it is difficult t»» reach a |>oint at which aluminous discharge…
Electric currents, Alternating · Electrical engineering
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