Word: detectable
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...than now exist, forecast weather and survey crop conditions. The orbiting Air Force technicians will also perform telescopic studies of the planets, and investigate the proton showers and other radiation from the sun. But the most significant work will be for defense. MOL can be used to reconnoiter targets, detect nuclear blasts and spot missile firings. Already the Navy has asked the Air Force to investigate whether MOL can keep track of Russian and Red Chinese submarines. Eventually, MOL will be able to double as a floating fortress capable of intercepting and knocking down hostile spacecraft...
...COMMUNICATIONS. A shortage of radios required to maintain combat communications, whether at the walkie-talkie level of squad leader or at the more sophisticated level of division headquarters. Also in short supply: spotting equipment for mortars; warning systems to detect approaching air craft; good guidance and control systems to give fast, low-flying bombers pinpoint accuracy...
...days of aviation, when the whistle of wind in guy wires gave the trained pilot as much information as any instrument, airmen have relied on their ears to recognize the sounds of trouble. Now the roar and whine of modern jets make it hard for the human ear to detect anything but the most obvious trouble. And by then it may be too late. To give pilots and maintenance a boost. General Electric is developing a sonic analyzer that can be applied to jet engines much as a physician's stethoscope is applied to the human chest. A trained...
...possible from the surface noises of wind, rain, traffic and grazing cattle. Known as LASA, for Large Aperture Seismic Array, the Montana system was laid out to get the best possible signal-to-noise ratio; it promises to provide a twentyfold improvement in the U.S.'s ability to detect seismic signals. With so many instruments spaced so far apart, it will also be possible to trace the direction and distance of an incoming signal because it will be received by all sensors at slightly different times. Though its potential detection capability is still unknown to scientists, the practical extent...
Broadcasters' volume measurement machines do not seem able to detect it, but listeners' eardrums are evidently more sensitive. For years, radio and TV owners have been blitzing the Federal Communications Commission with complaints about the loudness of commercials in comparison to the sound level of programs. Last week, after a tedious two-year study, the FCC agreed with the complaints. They "obviously cannot be dismissed on the ground that 'commercials aren't really loud, they just sound loud,'" declared the commission. The presentation of commercials "in a loud, rapid and strident manner" is "contrary...