Word: volt
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Dates: during 1930-1939
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Atom Guns. The two most powerful U. S. generators of electricity to shoot at atoms are Professor Lawrence's 5,000,000-volt generator at Berkeley and Professor Robert J. Van de Graaff's 10,000,000-volt one at Round Hill, Mass. Professor Lawrence gets his effect by whirling a loin. disk in an 85-ton magnet. Last week he said that he was substituting a 40-in. disk, to get 20,000,000-voltage. In Professor Van de Graaff's machine moving paper belts brush static electricity upon huge metal balls. A modification, for which...
...late President James Douglas of Phelps Dodge Corp. gave altogether $600,000 and 3½ gms. of radium. Edward Stephen Harkness gave $250,000 to buy 4 gms. more. Memorial today has 81 gms., largest supply in the U. S. General Electric has loaned a 700,000-volt x-ray machine whose radiations approximate radium's. The hospital has two 200,000-volt x-ray machines and several smaller ones. An x-ray unit invented by the late Dr. Arthur C. Heublein, which allows the entire body to be flooded by x-rays for long periods, the hospital stopped...
...right auricle. Here originates the stimulus which excites the normal heart to beat about 70 times a minute. Dr. Hyman's investigations told him that the stimulus is an electric current generated by the pacemaker. Ingeniously he measured that current, found it about one-thousandth of one volt...
...radio, and long distance telephony. Another result was Dr. Coolidge's perfection of dependable x-ray tubes and his design of tandem x-ray', tubes whose radiation is almost as powerful as radium's gamma rays. (Manhattan's Memorial Hospital is using a 900,000-volt Coolidge tube to treat cancer...
...tends to dissipate and absorb cathode rays before they can strike x-rays from anything. Dr. Gorton Rosa Fonda exhibited a stubby, 12-in. tube which produces an extraordinary amount of cathode rays in air as a bluish haze around an aluminum window. The device produces 70,000-volt rays from no-volt house current, can be carried with transformers anywhere that quantitative analyses are needed...