Word: infra
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...figured out the most logical places for Giap to concentrate men and supplies, then designated those areas as prime targets for U.S. planes. Dozens of reconnaissance aircraft were sent out to crisscross the area around Khe Sanh; even the heat from a match was enough to warn their sensitive infra-red cameras of Communist presence below...
...therefore little wonder that Stokely's book came as a major shock to white radicals. His analysis seems virtually to have overlooked the corporate capitalistic infra-structure of American society that is the focus of their attention. And only once in the entire book is even passing reference made to Vietnam. Martin Luther King, not to mention white radicals, must see this as a serious omission...
...they pass through the ocean depths, submarines invariably give off "scars"?traces of heat and turbulence caused by the ship's passage through the waters. The U.S. employs ultrasensitive infra-red devices in satellites and planes to look down into the oceans and detect the scars. Submarines also give off what Navymen call "an electronic signature" that, like a human fingerprint, is unique. The signature is the sum total of the sub's sounds?the beat of its screw, thump of its pumps, rustle of its wake. To detect those signatures, the U.S. uses a variety of acute listening...
...that, because of ice in Vladivostok, the Soviets had temporarily switched their Pacific sub base to Wonsan and the nearby island of Mayang-Do. The U.S. is also equipping its nuclear submarines with silent pumps and heat-dispersal systems so that the Soviets will not be able to use infra-red detection systems to locate the scars of American subs...
...mechanism was triggered by a series of hidden photoelectric cells paired with infra-red light projectors, which together created an invisible light grid. The cells were located directly beneath the light bulbs; when the viewer's body intercepted an infra-red light beam, the cell triggered a relay switch to the bulbs above. Haacke's Photoelectric Viewer Programmed Coordinate System furnished little to look at, but lots to ponder at the coffee shops. Does a tree make a noise when it falls in the forest if nobody is there to hear it? Does a work of art cease...