Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 245
iation in the luminosity. A 16-candle power lamp requiringa pressure of 110 volts, for instance, will give only 12-candlepower at 105 volts, while at 115 volts it would show greatbrilliancy but burn out very rapidly, and the power consumed isconsiderably increased; the decrease in the life of the… … 3-A 4-A 9 e-cp. 16-C.P. Fig. 101. usually has an efficiency of 1 -s- 3-5 =0-2857, but it deteri-orates very soon, and it is a good lamp that then showsthe ratio 1 -5-3*75. The continued efficiency of a lamp is of much more im-portance than along life, and exper-iments have provedthat the life of…
Electrical engineering
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