Flame, electricity and the camera; man's progress from the first kindling of fire to the wireless telegraph and the photography of color (1900)
Iles, George, 1852-1942 · New York, Doubleday & McClure co. · leaf 159
s devised a lamp oftested utility. Between two platinumThe Nernst Lamp, springs he places 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.
Fire · Electricity · Color photography
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