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 267
by inductive action through the non - conductor , until the same is sufficiently heated to become conducting , when the bombardment continues in the ordinary way . A different arrangement used in some of the bulbs constructed is illustrated in Fig . 152 . In this instance a non - conductor to is… … Fig . 15 ] . Fig . 152 . is wrapped with several layers of mica . An aluminum tube a is employed as usual for screening . It is so arranged that it reaches very nearly as high as the carbon and only the non - conductor to projects a little above it . The bombardment goes at first against the upper…
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