Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 391
or the indirect type of reflectors are effective in thisrespect. Fig. 60 illustrates a modern electric car fixture which,when used with 94-watt tungsten lamps and spaced 8 feet and 10inches apart in a row along the center of the car, gave average illum-ination at the seats on a plane 37 inches… … Fig. 61. Distribution Curves Showing Effect of 40-Watt Clear PrismaticReflector on Light Distribution from 56-Watt Railway Tungsten Lamp Fig. 61 shows the effect of a suitable reflector for car lighting uponthe distribution curve of the bare lamp. As illustrative of the illumination of steel…
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
