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 223
the list of signals, What time is it? Baltimore replied, I,which meant, One oclock. This was one character each way, which, accord-ing to the tariff, would amount to half a cent. The man paid his one cent, de-clined the change, and went his way. This was the revenue for four days.On the fifth I2|… … Fig. 55.Telegraph relay. ONE WIRE ENOUGH 185 which either speeds a message for a farther stage of itsjourney, or actuates a local sounder which utters the mes-sage in loud, unmistakable tones (Fig. 55). The armaturelever L plays between two stops, t-^, t^, under the influenceof attraction by the…
Fire · Electricity · Color photography
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