. The inventions : researches and writing of Nikola Tesla, with special reference to his work in polyphase currents and high potential lighting . ENTS. 177 vanes niouiited over it (Fig. 114), be connected to one terminal ofthe coil—eitlier one or both ends of the platinum wire being con-nected—the wire is rendered almost instantly incandescent, andthe mica vanes are rotated as though a current from a batterywere used, A thin carbon filament, or, preferably, a button ofsome refractory material (Fig. 115), even if it be a comparativelypoor conductor, inclosed in an exhausted globe, may be render
. The inventions : researches and writing of Nikola Tesla, with special reference to his work in polyphase currents and high potential lighting . ENTS. 177 vanes niouiited over it (Fig. 114), be connected to one terminal ofthe coil—eitlier one or both ends of the platinum wire being con-nected—the wire is rendered almost instantly incandescent, andthe mica vanes are rotated as though a current from a batterywere used, A thin carbon filament, or, preferably, a button ofsome refractory material (Fig. 115), even if it be a comparativelypoor conductor, inclosed in an exhausted globe, may be renderedhighly incandescent; and in this manner a simple lani]) capableof giviug any desired candle power is provided. The success of lamps of this kind would depend largely on theselection of the lig-ht-g-ivini- bodies contained within the , under the conditions described, refractory bodies—whichare very poor conductors and capable of withstanding for a longtime excessively high degrees of temperature—may be used,such illuminating devices may be rendered successful. It might be thought at first that if the bulb, containing the.
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