Word: grounds
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Dates: during 1930-1939
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...technical opinion, Spain has been unsatisfactory, perhaps even misleading, as a war testing ground for aircraft. This war, despite all its unspeakable horrors, has not been "big stuff." A U.S. Navy-trained flier with the Leftists' Army last year wrote that the Russians had the best ships, the Germans the best-trained pilots. No man can be sure, however, to what extent Germany, Russia and Italy sent examples of their best ships to fight over Spain...
Chief purpose of any direction finder in transport flying is not alone to locate ground points but to help determine the plane's position in flight. After a ground station is tuned in on the ship's radio receiver in this new Sperry-RCA apparatus, a loop antenna suspended beneath the plane rotates automatically until it is at right angles to the source of the signal, registering the bearing on the dial. Where two or more such bearings intersect is approximately the plane's position...
...device is a newly-developed radio tube capable of generating for practical use an ultra-high frequency wave of 500 megacycles that is not affected by static conditions, has a cork-centre bounce, has a frequency that can be measured at distances as low as 50 feet off the ground. Sensitive at present to 5,000 feet, improvements in the tube and transmitter can extend the altimeter's effectiveness to 15,000 feet. As feeler for possible obstructions dead ahead, the present 5,000-foot range would be inadequate because it would give a pilot flying three miles...
...Polo Grounds in Manhattan, a flashy Purdue eleven that allowed Minnesota to score only seven points against it last fortnight miraculously held Fordham to a 6-to-6 tie, despite the fact that Fordham gained over three times as much ground by rushing (419 yards to 129 yards...
...bones become that once when he bent to pick up a heavy weight he heard his spine crack. To bolster up his telescoped vertebrae doctors had tried three different leather corsets, three fabric corsets with iron stays, as well as heavy doses of Vitamin D, calcium, and ground eggshells. Dr. Meulengracht found that the patient had always had sufficient calcium in his diet, but that apparently little of it had been absorbed for many years. No textbook diagnosis explained his case...