Word: signaled
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Dates: during 1940-1949
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Compared to the R.A.F.'s, U.S. bombing technique was deficient in one respect. U.S. bombardiers all dropped their loads on signal from the lead plane, shortening both the pattern and length of their raids, and easing the problems of German damage control squads...
Damning Evidence. In Pasadena, Calif., Motorist John Moore, fresh from a hair-raising ride on the cowcatcher of the speedy Santa Fe Chief, clambered down shaky but unhurt to get a ticket for ignoring the grade-crossing stop signal...
...Pauley's suite in a Manhattan hotel. There, he said, Pauley told him: "Norm, you know I have raised money for the campaign. A lot of that money came from people interested in the tidelands. In my room waiting to see you is Harry March, vice president of Signal Oil & Gas Co. ... These people have contributed to the campaign and they expect something for their money...
...Wiggle. Soon after V-J day, the Signal Corps put Lieut. Colonel John H. DeWitt, a former radio "ham," in charge of a project called "Diana" (goddess of the moon, the wood, childbirth). No radically new apparatus was used, only a modified version of the standard "SCR-271" radar set, operating on its regular, fairly high frequency of 112 megacycles. The key play was in not sending out thousands of "pulses" of radio energy per second, which would not have allowed enough time in between for the moon echo to return; instead, Belmar sent out only one half-second pulse...
...Signal Corps repeated the experiment many times, and disinterested scientists checked the results. Sample check: the echo wave at moonrise-when the first contact was made-was slightly higher in frequency than the outgoing pulse. In accordance with the Doppler Effect, a wave reflected from an approaching body must increase its frequency. Chiefly because of the earth's revolution, the moon at that hour was moving toward the sending station at about 750 miles an hour...