Word: heatedness
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The underlying principle of the vacuum tube, first detected by Edison during his experiments with electric light a half century ago, is that when two wires, one positively charged, and the other negatively, are inserted into a vacuum, and the negative wire or filament is heated, a current passes from...
The rough control over current, which electricians were able to exercise through changing the potentials on the positive and negative terminals of the original tubes, was rendered extremely sensitive and intricate with the addition, by Dr. Lee De Forest, of an independently charged grid of wire between the heated filament...
Dr. Hultgren has also developed an electron bombardment furnace in which small samples of metallic alloys are heated by the impact of electrons at high velocity. This electron bombardment furnace is capable of heating several grams of metal to a temperature of 3000 degrees Centigrade, and its limiting high temperature...
Last week Drs. Eugene Lindsay Opie and Jules Freund of Cornell University Medical College reported in the Journal of Experimental Medicine a harmless preventive which they described as just as effective as BCG. They simply killed tubercle bacilli by heat and added heated horse serum. This protects an inoculated individual...
The department of Mechanical Engineering is under the leadership of Professor Lionel S. Marks, assisted by Professor C. H. Berry. Professor Marks is widely recognized for his work on axial flow fans which have been brought to their present state of development largely through his efforts. In addition, he is...