Word: cm
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Dates: during 1950-1959
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Last week, in cloudy New England, Harvard University dedicated a new radio telescope at the Agassiz Station of the Harvard Observatory, 25 miles west of Cambridge. The telescope's 60-ft. "dish" antenna is steerable (it points anywhere) and is specially designed to pick up 21-cm. radio waves from the great clouds of hydrogen that clutter the universe...
...cm. waves were first observed at Harvard five years ago by Drs. Harold I. Ewen and Edward M. Purcell, and they have proved wonderfully useful in showing up features of the universe invisible to telescopes using light. The hydrogen clouds are everywhere, streaming along the spiral arms of the galaxy, clustered thickly in the Milky Way. An average cloud may be 25 light years (150 trillion miles) in diameter and weigh 100 times as much...
...that Pitt was on defense with the other team in possession inside Pitt's five-yard line. Then, he asked what cheers they would call for in such a situation. The first candidate picked, 'Hold that linel' The second said, 'Hold tight!' But the third yelled, 'Sock it to 'cm, Pitt!' and that's exactly the way I feel about football." After combatting alumni abuse, apathetic crowds, and devoting five years of dedicated effort, this has come to be the Harvard feeling about football. It is a good...
Unnatural Laws. The things that science deals with, said Gold, range in size from electrons (radius 10 -13 cm) to the universe itself (radius 10 27 cm). Man, the earth and the solar system lie midway between the two extremes, and the laws that govern them have become so familiar that any deviation seems wrong. But gravitation, one ruling common-sense force, is ignored by subatomic particles, which are attracted to one another by enormously strong forces effective only at very short distances. To explain events in the "microphysical" world, scientists need the "unnatural" rules of quantum theory...
Last week United Air Lines announced that it had tested a microwave radar, found it the best yet for commercial planes. Company engineers installed "C-band" (5.5 cm.) radar in a DC-3 (dubbed ' Sir Echo"). Unlike lower and higher frequency radar, the C-band radar scanned both a storm and the weather on the other side, enabled the pilot to spot and follow the path of least turbulence through the storm, or to detour conveniently if his route was clearly blocked. One important safety feature: the pilot, watching his scope, could see not only storms but the mountains...