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 248
ce that the luminosity is unevenly distributed in the globe , and after passing the current for some time the bulb ap pears as in Fig . 144 . From this stage the phenomenon will gradually pass to that indicated in Fig . 145 , after some minutes , hours , days or weeks , according as the bulb is… … Fig . 144 . Fig . 145 . and magnetic ; influence . The bulb hanging straight down from a wire , and all objects being remote from it , the approach of the observer at a few paces from the bulb will cause the brush to fly to the opposite side , and if he walks around the bulb it will always keep on…
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