Democratic Sentinel, Volume 18, Number 8, Rensselaer, Jasper County, 9 March 1894 — Power of Electric Search Lights. [ARTICLE]

Power of Electric Search Lights.

Probably not one person among a hundred has even an approximate conception of the illuminating power of one of the great modern electric search lights, and it Is only vaguely understood that it must be something enormous. As a matter of fact, with the projecting reflectors in use, which serve as multiplying factors fqr the actual candle-power of the electric arc, the illuminating capacity of the beams issuing from one of the large modern search lights has been placed at the equivalent of something over 200,000,000 candles. . Just what this is not easily realized, though a popular measure of the lighting power is afforded by the statement that, under favorable atmospheric conditions, one of these large lights can be seen nearly 100 miles away, and will illuminate objects at a distance of almost twenty miles with sufficient clearness to make their examination possible with the aid of a field glass. —Cassell’s Magazine.