. The inventions : researches and writing of Nikola Tesla, with special reference to his work in polyphase currents and high potential lighting . TENCY AND HIGH POTENTIAL CURRENTS. Ifto which should be well insulated. Geissler tubes may also beliijhted across the points of the bent bar; hi this case, of course,it is better to employ smaller capacities. I have found it prac-ticable to lio;]it up in this manner a lamp, and even a (xeisslertube, shunted by a short, heavy block of metal, and this resultseems at tirst very curious. In fact, the thicker the copper barin Fig. 12S, the better it is fo
. The inventions : researches and writing of Nikola Tesla, with special reference to his work in polyphase currents and high potential lighting . TENCY AND HIGH POTENTIAL CURRENTS. Ifto which should be well insulated. Geissler tubes may also beliijhted across the points of the bent bar; hi this case, of course,it is better to employ smaller capacities. I have found it prac-ticable to lio;]it up in this manner a lamp, and even a (xeisslertube, shunted by a short, heavy block of metal, and this resultseems at tirst very curious. In fact, the thicker the copper barin Fig. 12S, the better it is for the success of the experiments, asthey appear more striking. When lamps with long slender fila-ments are used it vdW be often noted that the filaments are fromtime to time violently vibrated, the vibration being smallest atthe nodal points. This vibration seems to be due to an electro-static action between tlie filament and the glass of the bulb. In sf>me of the above experiments it is preferable to use speciallamps lirtving a straight filament as shown in Fig. 129. Whensuch u liini|) is used a still more curious phenomenon than those. described iimy be observed. The l;iiii|) may be-phu-ed across theco|)|)ei- bar and lighted, and by nsing somewhat hirger capacities,or, ill other words, smaller fre(pieiicies or smaller im]>ulsive im-pedances, the tilanient may be brought to any desired degree oiincandescence. Ihit w hen the impedance is increaseil, a point isreached when coiM|»arati\(lv btth current passes through thecarbon, and niosi ot it through the raretiedgas; or perhaps itnia\ be niore coiicct to state that tlie current divides nearlye\cnly through both, in spite ol* the enoniKnis dilVereiUH in tluresistiince, and tliis wonhl be true iiidess the gas and tlu tihinienll)eha\( dilfereiitly. It is then noted that tlii whoh Inilb is bril-liaiiliv ilhiniiiialed, and Ihe ends of the hading-in wiris becomeincandesceiil and ollen ihrow oil sparks in eonsiM|iience ot tlii&g
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Keywords: ., bookcentury1800, bookdecade1890, bookidinventionsre, bookyear1894
