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 419
Professor Philipp Lenard todiscover a wonderful power of such a bulb. Emergingfrom it was a cathode ray which passed nearly as freelythrough a thin plate of aluminium as common sunshine doesthrough a pane of glass (Fig. 89). Hertz had, a few years 350 THE CAMERA AND ELECTRICITY previously,… … Lenard tube. W, aluminium window. and in a much higher degree. Gold- and silver-foil let therays pass through with almost undiminished intensity. Especially brilliant are the fluorescent and phosphorescenteffects excited by these rays; the platino-cyanides, thephosphides of the alkaline earths,…
Fire · Electricity · Color photography
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