Word: detectable
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...Department of Defense, which ordered the satellites from Space Technology Laboratories, and the Atomic Energy Commission, which supplied their instruments, insist that they are only innocent research devices aimed at learning how to detect atom tests in space. They are, in fact, a nuclear testing control system already in successful operation. The satellites launched last fall have been working perfectly three months longer than their expected life; their builders think they will stay on the job for at least nine months more without giving trouble. The two that were fired aloft last week should have an even longer life...
...lungs, the result is so dramatic and catastrophic - in many cases, fatal -that doctors find the difficulty relatively easy to diagnose. But small clots that block some of the smaller arterial branches are far more common than such massive pulmonary embolisms. The trouble is, they are so hard to detect that the true nature of the illness is often missed. Patients complain of shortness of breath, they faint frequently, and they may collapse after exertion, leaving their doctors baffled. Now, atomic medicine is coming to the aid of chest physicians and embolism patients with an ingenious and relatively simple diagnostic...
...their congregations are no more committed to the church than to the country club. Denominational leaders despair at the widespread lay unwillingness to recognize the race question as a moral issue. In the current national controversy over school prayer, and in the rising challenges to church tax exemptions, theologians detect a trend toward secularism that will soon call for a revolution in church attitudes and institutions. Changes in manners and morals summon Protestantism to find a new mode of relevance in a "post-Christian" world...
...radars and fighter strips along the border of East and West Germany, remaining just inside Communist territory. Then the MIG darts suddenly across the dead line. As Western units scramble, delicate Soviet receivers across the border carefully note how long it takes the planes to get in the air, detect changes in frequencies of allied radars and radio circuits, check the order of battle, even learn to recognize individual flyers' voices and tactical commands...
Eavesdropping may not be nice, but it gets niftier all the time. From gleaming electronics factories and grubby back-street workshops has come an ever-subtler array of "surveillance instruments" to penetrate the individual's privacy. The devices are now so easy to plant and so hard to detect that their likely victims-lovers or diplomats, criminals or key executives-can seldom be wholly sure any more that confidential conversations are not being overheard or recorded. Private eyes have become private ears, and they have never been more prosperous. They snoop with "bugs" hidden in hatbands or ballpoint pens...