. The inventions : researches and writing of Nikola Tesla, with special reference to his work in polyphase currents and high potential lighting . but if is not important to emplo\ if. HIGH FBEQUENCT AND HIGH POTENTIAL CURRENTS. 227 The small hollow sphere s is tilled with some conductingpowder, and a ware v: is cemented in the neck for the purpose ofconnecting the conducting powder with the generator. The construction shown in Fig. 142 was chosen in order toremove from the brush any conducting body which might possi-bly affect it. The bulb consists in this case of a lamp globe Z,which has a ne
. The inventions : researches and writing of Nikola Tesla, with special reference to his work in polyphase currents and high potential lighting . but if is not important to emplo\ if. HIGH FBEQUENCT AND HIGH POTENTIAL CURRENTS. 227 The small hollow sphere s is tilled with some conductingpowder, and a ware v: is cemented in the neck for the purpose ofconnecting the conducting powder with the generator. The construction shown in Fig. 142 was chosen in order toremove from the brush any conducting body which might possi-bly affect it. The bulb consists in this case of a lamp globe Z,which has a neck n, provided with a tube h and sinall sphere -v,sealed to it, so that two entirely independent compartments areformed, as indicated in the drawing. When the bulb is in usethe neck n is provided with a tinfoil coating, which is connectedto the generator and acts inductively upon the moderately rare-tied and highly conducted gas inclosed in the neck. From therethe current passes tlirough the tube h into the small sphere -s, toact by induction upon the gas contained in the globe L. It is of advantage to make the tube t very thick, the hole. Fk;. 1 l;l through it very small, and to blow the sphere ,v very thin. It isof the greatest importance that the sphere s be placed in tlucentre of the gIol)e L. Figs. 14;{, 144 and 145 indicate ditterent forms, or stages, ofthe l)i-Msh. Kig. 14H shows the hrnsh as it tirst appears in a hull)|)rovi(h(l witli a conducting tcniiinal ; l>ut, as in such a hulh itvery so(»n disappeais oitiMi alter a fiW minutes 1 will to the description of the phenonunon as seen in a hulhwitiioiit conducting electrode. It isoh^(M•\cd under tin lollow-ing condiliiuis: When the gl(»he A ( Iigs. Ill and 111) is exhausted to a \ei\high degree, general!V the hidh is not excited u|»ou connectingthe wire ^r ( l Ixiito it. it isut;ually sutticitiit to 4rnis|» the jxlobe /, with r\\v liaiuL An in-tense pliosphoreseence then spreads at tirst over the
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Keywords: ., bookcentury1800, bookdecade1890, bookidinventionsre, bookyear1894
