Word: x-rays
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...X ray-producing potential of TV sets first came to public attention in May, when the General Electric Co. announced that it had discovered excessive X-ray emissions from some of its large-screen color TV sets. To eliminate any danger, G.E. said that it was replacing an improperly shielded voltage regulator tube in more than 100,000 color TV sets (18-, 20-, 22-and 23-in.) that were sold between Sept. 1, 1966 and May 31, 1967. But 9,000 of the G.E. sets have not yet been located. The U.S. Public Health Service has now urged anyone...
...Step. Study of the southern heavens will provide checkpoints on what scientists have learned in the past several years about X-ray sources in space. It will also yield some of the secrets of spectacular globular star clusters like Omega Centauri, 15,000 light-years from earth. The brightest clusters, including those nearest the earth, can be found only in the southern sky. Since the clusters are believed to contain some of the oldest stars in the Milky Way, they may provide invaluable knowledge regarding the age of the universe...
...agree, are the oldest, brightest, farthest and most mysterious celestial objects known to man. To this list of superlatives, scientists at the Naval Research Laboratory have now added another. After recording X rays emanating from quasar 3C 273-the first time that a quasar has been identified as an X-ray source -Physicists Herbert Friedman and Edward Byram have determined that 3C 273 is also the most powerful X-ray emitter ever discovered...
...Sands, N. Mex., in May. Soaring above the atmosphere, which absorbs X rays before they reach the earth, the rocket detected X-radiation from quasar 3C 273, from a giant elliptical galaxy called M 87, and from three locations in the sky where no celestial objects are visible. The recorded radiation from the quasar was only one-thousandth as great as that from a starlike object called Sco XR-1-which appears to be the brightest X-ray emitter in the sky (TIME, Sept. 16). But 3C 273 is 1.5 billion light-years away, compared with only 500 light-years...
...would like next to monitor 3C 273's X-ray luminosity to determine if it varies as widely as the quasar's visible light. He would also like to get an X-ray spectrum, which might help unlock more of the quasars secrets. Either procedure would require a longer look at quasar X rays than can be obtained during the fleeting minutes that an X-ray telescope can be rocketed above the earth's atmosphere. The answer, Friedman says, is an X-ray telescope in an orbiting satellite or, better yet, one on the surface...