Word: clearing
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Dates: during 1930-1939
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...Schiaparelli* first pictured the vague markings called "canals." Schiaparelli actually called them canali, which means "channels," but was translated "canals." Rivers cut channels, but canals are built by intelligent agents. In the U. S., Astronomer Percival Lowell picked up the canal idea with enthusiasm, claimed he could see them clearly. His theory: the canals were built to bring water from the melting ice of the polar caps, by Martian inhabitants desperately trying to keep their arid lands irrigated. Other astronomers, some with better eyesight than Lowell's, declared that the canals were optical and psychological illusions. Certainly narrow, clear...
...electrical engineering at Columbia University, has made a tidy fortune for himself by inventing the super-regenerative and superheterodyne radio circuits. For the last 25 years he has been working on the problems of static, interference, tube noises and fading. Some time ago, in an effort to get perfectly clear reception, he devised a system of frequency modulation in the transmitter. According to standard broadcasting technique, which relies on amplitude modulation, this was heresy...
Last year Professor Armstrong built himself a 400-ft. tower on the Hudson River Palisades at Alpine, N. J.. began sending out experimental frequency-modulated programs. In a few experimental receivers they came in crystal clear, in every kind of weather. From the tower at Alpine the reception range is about 100 miles...
While descriptions of battles, complex campaigns, intrigues, finances are all top-drawer Pratt, clear and simple as the maps that dot the book, readers are apt later on to find such Prattlings as these tucked away in their mental bottom drawers...
...more efficient than its own, and which Landlubber Pratt and enthusiasts play weekly on the floor of his big Manhattan studio. Between battles, Player Pratt steals time to author fat volumes whose swingtime style, alternating with simple, forceful exposition, make history's dull spots lively, its blind spots clear to many a layman. If, as some charge, he prefers the exciting but doubtful facts to the sound but dull, even grudging critics admit that in The Navy: A History and Hail, Caesar!, Fletcher Pratt has coaxed some engaging new curves into the muse of history...