Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 333
P.D. between itsterminals of about 50 volts. Such a lamp produces about 500 * candlepower, and therefore consumes energy at the rate of about 1 watt percandle power. The liglit of the arc lamp is due to tlie intense heatdeveloped on account of resistance, not to actual combustion, or… … Fig. 294. The arclight HEATING EFFECTS 287 the carbon at the hot tips tliat in a few honrs the rods are consnnied.To overcome this difficulty the inclosed arc (Fig. 295) is used. Shortlyafter the arc is struck the oxygen in the inner globe is used up andthen the hot carbon tips are surrounded by…
Physics
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