Word: x-rays
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...American Dental Association convention in Dallas, there was disagreement over something that patients have long taken for granted: the safety of dental X rays. Although the A.D.A. has been encouraging the use of safer X-ray machines for years, many devices of antique design still adorn countless offices. Some have not even been equipped with an electronic timer, available since 1955, to go with the use of high-speed film and cut the exposure time to a fraction of a second. The vast majority still have, at their business end, a plastic cone three or four inches long. This makes...
...kept trying. In Connecticut, she had to follow a Hungarian violinist who made everyone cry; one night in the Catskills, her routine was interrupted by round-by-round reports on the Patterson-Johansson fight; in Quebec, she was foil to Kudabux, the Man with the X-Ray Eyes; in Bridgeport, Conn., the manager blared over the loudspeaker...
...Thanks for Warning." Hilder's only hope of keeping Gidrofon out of the way of the less maneuverable carriers and cruisers is to place his ship between them. When the Conserver gets too close, the Russian quickly hoists three indignant signal flags: Code Kilo X-ray ("You should keep farther away"). On one occasion Hilder replied by flashing a light with a warning that U.S. subs were operating in the area. The Russian replied in clumsy English: "Thanks for warning. I are seeing submarines." Late last month the Gidrofon finally departed for its home port-probably Vladivostok. For days...
...catalogue of medical engineering advances grows almost daily. Last week in San Francisco, at the annual meeting of the American Roentgen Ray Society, a novel, three-dimensional fluoroscopy machine was displayed by General Electric. A complex welter of mirrors, polarizing filters, lenses, an image intensifier and a two-cathode X-ray tube (see diagram), G.E.'s Stereo Fluoricon shows a patient to his physician as a green 3-D image, "like a skeleton with its organs hung inside." Other X-ray machines and sonar beams have produced similar 3-D effects, but previous processes were too cumbersome or time...
...rocket's nose was a complex instrument package designed by Physicist Herbert Gursky and containing a sensitive X-ray scanner and a small camera pointed at Scorpio for 55 sec. of the brief ballistic flight. By measuring the changing intensity of X rays detected by the scanner and coordinating the scanner with the camera, Giacconi's group was able to locate Scorpio's X-ray source about 1,000 times as accurately as any previous studies. They also determined the angular size of the radiating object itself, and concluded that the X-ray source would probably appear...