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 95
mmonatmospheric pressure that it quickly chills itself in the pro-cess. Of course this evaporation is swifter still when anexhausting-pump reduces the atmospheric pressure; andquite as important is the fact that, at comparatively mod- 66 THE BANISHMENT OF HEAT erate pressures, this ammonia vapour… … Fig. 16. Refrigerator, Frick Co., Waynesboro, Pa.A, ammonia; B, brine; C, engine, by turns exhauster and condenser. surface of the liquid ammonia A. The resulting chill ofrapid evaporation is communicated to B, a tank filled withbrine—which remains liquid at temperatures below thefreezing-point of…
Technology · Fire · Electricity · Photography
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