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Dates: during 1930-1939
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...generation ago, the Test Tube was the symbol of Science. Present now is the era of the Vacuum Tube. While tubes with everything imaginable in them are still used in laboratory research, tubes with nothing in them are used in radio as amplifiers, in medicine as a source of X-rays, in the laboratory to photograph molecules, as guns to bombard and break down atoms. Last week new tube developments were reported...
Millikan Tube. Members of the Radiological Society of North America meeting in Pasadena gave Dr. Robert Andrews Millikan, chairman of California Institute of Technology, a gold medal for a powerful X-ray source developed in his laboratories. The new 650,000-volt tube, the work of Dr. E. C. Lauritsen, is the most powerful ever demonstrated. Dr. William David Coolidge in General Electric Laboratories, Schenectady, has been experimenting for the past year with a 900,000-volt tube not yet perfected for demonstration. Hospitals today use a 200,000-volt tube. Five billion dollars worth of radium (20 Ib.) would...
Olshevsky Tube. A more immediately practical development was reported from the Sloane physics laboratory, Yale University. Dr. Dimitry E. Olshevsky announced that he has constructed a tube which will enable operators to localize X-rays better. When X-rays are produced by shooting electrons at a target, they radiate in all directions from their source. Some travel through the target, others back in the direction of the bombarding electrons. Present-day tubes have utilized the rays proceeding toward the electrons' source. These rays are not so intense as those proceeding away from the electronic beam. The source of their...
After three weeks of faltering, unimpressive flight from Switzerland, the great Dornier flying boat DO-X (TIME, Nov. 17) finally rode at anchor in Lisbon Harbor last week. There she was fuelled for another short hop to Cadiz while Dornier officials fussed and worried about her ability to fly to the U. S. this winter. Less than an hour after the fuel tanks were filled, fire broke out in the auxiliary engine room, jumped to the left wing, exploded the gasoline in the wing tank before the five men aboard knew what had happened. The four crewmen, led by Pilot...
Ever since the DO-X, when enroute to Bordeaux, fell 25 mi. short of her destination and was towed the remaining distance, there have been rumors that the twelve Curtiss Conqueror engines had not served well enough to warrant a transatlantic flight. These rumors the Brothers Dornier, Claude and Maurice, vigorously denied. But finally they did concede that bad weather on the Azores-Bermuda route had upset their plan to fly to New York. Instead, they planned to send the DO-X across the South Atlantic to Brazil. At that juncture Lieut. Clarence H. ("Dutch") Schildhauer, U. S. copilot, resigned...