Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 434
IGHTING 2,525 source would produce at the point selected, 3, note the corresponding angle,4, determine from the distribution curve the candle power at the anglenoted, 5, multiply the candle power thus found by the value of illumi-nation corresponding to 1 candle power, as found in the table on… … FlG. 3,474.—Illumination curves for Mazda 25, 40, and 60 watt 100-125 volt bowl frostedlamps with extensive reflectors, to accompany the example of point by point method ofcalculating illumination here given. Example: Let it be required to determine theillumination given by a Mazda 40 watt bowl…
Electrical engineering
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