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 320
re given anda horizontal distribution curve in which the light given in differentdirections throughout 360 degrees in a horizontal plane are given.The mean of the values of the candle-power in a horizontal planegives the mean horizontal candle-power, while a mean of the valuesin the vertical plane… … Fig. 14. C. P. Distribution Curves of 100-Watt G. E. Tung-sten Lamps with B-3, C-3, and D-3 Holophane Reflectors The use of shades and reflectors greatly modifies the form of thedistribution curves of lamps, the exact nature of the modificationdepending upon the design of the shade or the…
Electrical engineering
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