Electricians' operating and testing manual; a hand book for men in charge of electrical apparatus, repair men, trouble men, lamp trimmers, and electricians generally (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 196
re cast by the lamp frame. The relative candlepow^-ers at other positions are shown by the length of theradial lines from the center to the curve in the figure. With alternating current arcs the carbons are al- 192 Operating and Testing ternately positive and negative, and the distributionof light… … Figure 130 the maximum light is thrown out at different angles.Figure 131 shows the distribution of light from anopen, alternating current arc. It will be seen thatthere are two points of maximum candlepower, one at40° below the horizontal and the other at 40^ abovethe horizontal. Arc Lamps 193 It…
Electrical engineering · Electric testing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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