Flame, electricity and the camera; man's progress from the first kindling of fire to the wireless telegraph and the photography of color (1901)
Iles, George, 1852-1942 · New York, Doubleday & McClure co. · leaf 158
s devised a lamp oftested utility. Between two platinumThe Nernst Lamp, springs he placcs a Cylinder formed of anysubstance, such as magnesia, which is re-fractory to heat, and at the same time refulgent at a hightemperature. A cylinder of magnesia at common tempera-tures is a poor conductor, but… … Fig. 43.Nernst lamp. CONDUCTORS ABOLISHED 129 Nernst lamp enjoys all the economy of the arc-lamp, andoffers the further advantage that it can be manufactured insmaller dimensions and serve smaller spaces. How far the necessity for beginning by .\\\\\\\l I \\ll///A warming its cylinder may ^ work to…
Fire · Electricity · Color photography
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