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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 378

An illustration from 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, leaf 378
andles; c. y. is candle-power of theunit, determined from the distribution curve of the lamp; h is dis-tance the lamp is mounted above the ground, in feet; and c^is distancefrom the base of the pole supporting the lamp to the point wherethe iUumination is being considered, Fig. 50. While this will… … Ideal Distribution Curve for a StreetLight with powerful units and giving a minimum illumination of .05 footcandles would be considered better illuminated than one havingsmaller units so distributed asto give the same minimumvalue. Ideal and Actual Distri=bution Curves. Since a uni-form…

Electrical engineering

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