Word: vapor
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...McAdie '84, Abbott Lawrence Rotch Professor of Meteorology and Director of the Blue Hill Observatory, to study ice-storms and subcooled water vapor in an effort to determine conditions favoring the formation of ice coatings on airplanes and airships...
...Humidity, more exactly relative humidity, is the amount of water vapor in the air. The warmer the air at any height the more vapor it can carry. A humidity of 60 means that the atmosphere is 60% saturated...
...Matthew Luckiesh's presentation of his new General Electric sunlight lamp. The bulb is 6¼ in. long. It contains two separated tungsten electrodes, a little pool of mercury, a tungsten filament. When the electric switch is turned, current heats the filament to incandescence. The heat vaporizes the mercury. The mercury vapor diffuses between the electrodes and permits the current to jump across as a brilliant mercury arc. The combined light of arc, electrodes and filament appears much whiter than Mazda "daylight" bulbs. It produces 40 times as much humanly beneficial ultraviolet radiation as does the midday midsummer...
This new tube at present uses only 250,000 volts, which flick electrons off the cathode at tremendous speed. The electrons rush through a stream of mercury vapor ions overloaded with four charges of positive electricity. Ions and electrons crash and reinforce their speeds, giving the stupendous effect of 1,000,000 volts. If the 1,000,000 volts available at Caltech were used initially, the effect would be four times as powerful. If, as the physicists hope, they can load the mercury ions five or six times, they expect to get the equivalent of five or six million volts...
...type of quartz mercury vapor bulb for generating ultraviolet light developed...