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 38
otion produced by the reversals of polar-ity of the magnet, but as tlie speed of the armature increases, thevibrations become less and less frequent and finally entirely cease.Then the iron is weakly but permanently attracted, showing tliatsynchronism is reached and the field magnet energized by… … Fi<;. 1:1 sj)ct(l is reached, ••!■ \ cry nearly st»; it ceases to rotate and i> j)er-iiiaiieiitly attracted. A crude but illustrative i.\j)eiimeiit is made with an iiieaiides-ceiit lamp. Placing the lamj) in circuit with tlii continuous cur-rent generator and in series with the magnet coil,…
Electric currents, Alternating · Electrical engineering
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