The book Electric Incandescent Lighting was written by author Edwin J Edwin James Houston Here you can read free online of Electric Incandescent Lighting book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Electric Incandescent Lighting a good or bad book?
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Here the initial candle- THE INCANDESCING LAMP. 189 power is raised to 17 1/2 candles and after 500 hours burning, the candle-power is 200 300 HOURS Fm. 51. CURVES OP CANDLE-POWER IN LAMPS OF SAME TYPE OPERATED AT DIFFERENT FIXED EFFICIENCIES. about 10 3/4 candles. Curve No. 3 shows similar results for a pressure of 112 volts. 190 ELECTRIC INCANDESCENT LIGHTING. Curve No. 2 for 113 volts and Curve No. 1 for 114 volts. Here the candle-power \ 100 200 300 400 600 600 700 HOO 900 HOURS FIG. 52. CU...RVES OP CANDLE-POWER OP THE SAME TYPES OP LAMP OPERATED AT DIFFERENT EFFICIENCES. commences at 24, but is less than 14 after 200 hours. Fig. 52 represents the behavior of four similar types of lamps, operated steadily THE INCANDESCING LAMP. 191 at various efficiencies, instead of at various pressures. Curve No. 1, represents the behavior with 0. 25 candle-per-watt ; Curve No. 2, 0. 286 candle-per-watt; Curve No. 3, 0. 333, and curve No. 4, 0. 4 candle-per- watt. It will be seen that the high effi- ciency lamp falls to fifty per cent, of its initial candle-power in 600 hours, while the lowest efficiency lamp only loses ten per cent, of its candle-power in the same time.
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