Electricians' operating and testing manual; (1910)
Horstmann, Henry C. [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. H. Drake & co · leaf 197
away fromthis position the illumination rapidly diminishes. Thealternating current arc gives a different distributionof light, the maximum amount of light being given Arc Lamps 195 out at angles of 40° above and below the horizontal.By the use of properly designed reflectors, the lightwhich is… … Figure 132of a direct current lamp is done away with. (Seefigure 132.) It is jn a meaSure due to this betterdistribution of light that the alternating current hascome into such general use. In order to start any arc lamp it is necessary firstto bring the carbons together, so that the current can…
Electrical engineering · Electric testing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
