Word: low-level
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...word, just as they [social scientists] have already seen the need of expanding their conception of behavior to include talk (and the relatively low-level generalisations expressed in it), so they must now expand it still further to include the more abstract levels of theoretical behavior, wherever these occur in societies." W.T. Jones, "The Romantic Syndrome...
...inhabited parts of the earth. Low-level communications satellites like Telstar I, whose orbit varied between 593 and 3,503 miles, do not cover nearly as much of the earth's surface. Being so low, they can get along with less transmitting and receiving power, but many more of them must be used for world-wide communication. Another disadvantage of low-level satellites is that steerable radio antennas must follow them as they sweep rapidly across the sky. Synchronous satellites turning with the earth can be kept in view by fixed antennas, which are simpler to operate...
...also knew Swedish defense sites and strengths, had access to key mobilization and communication plans. In Washington, he had access among other things, to detailed information on the U.S. Army's Hawk, radar-guided antiaircraft missile designed to knock down low-flying supersonic planes. The Russians are working hard to perfect a defense against low-level nuclear attack, and the Hawk could help them...
...think the Soviet Union was very reluctant to have us stop ships which carried with them a good deal of their highly secret and sensitive material. One of the reasons I think that the Soviet Union withdrew the IL-28s was because we were carrying on very intensive low-level photography. Now, no one would have guessed, probably, that that would have been such a harassment...
Taking pictures under such conditions lor elaborate equipment. Low-level photo planes carry five or more cameras pointing ahead, astern, to each side and directly down. Since the pilot is too busy with flight controls to give the cameras my attention, they must advance their own film and give each frame the proper exposure for the prevailing light conditions. Pictures can be shot singly but the time over the target is so short that they are generally shot as quickly as possible often many times a second...