Electricity experimentally and practically applied; a book for the beginner and for the practical man, principles, experiments, practical applications and problems (1910)
Ashe, Sydney Whitmore · New York, D. Van Nostrand company · leaf 208
illumination is given offfrom the upper positive carbon, theluminous part being termed the crater.With the direct current arc lamp, thepositive carbon is consumed abouttwice as fast as the negative carbon.With an alternating current arc. Fig. 256, both carbons areequally luminous, and both are… … Fig. 256. — AlternatingCurrent Arc. THE ARC LIGHT 18/ Experiment 115. Form an arc between two electric light carbonshaving a resistance in series with the carbons and a ii6-volt direct cur-rent source of supply. Preferably use an automatic arc lamp in a project-ing lantern. Project this arc on the…
Electricity · Electrical engineering
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