Word: filtering
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Dates: during 1940-1949
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Magic Sandwich. Most recent gadget is the "birefringent filter," designed in 1940 by Dr. John W. Evans of Chabot Observatory, Oakland, Calif. It is a multi-decker sandwich of thin quartz plates and sheets of polaroid, which passes only light of a single pure color. Accomplishing the same object as the spectroheliograph, it is much more effective and easier for astronomers to use. When built into a coronagraph, it lets the complexities of the sun's atmosphere be seen in all their terrifying glory...
High (11,500 ft.) in the Rockies near Climax, Colo., Dr. Roberts watches the sun through the thin, clean air and through Harvard's coronagraph, with its birefringent filter. He finds the sight a perpetual three-ring circus. From the dazzling surface of the sun (well screened by his gadgets), enormous gaseous solar "prominences" leap in graceful arcs at several hundred miles per second, driven by unknown forces (see cut). Little "spicules" (big enough to be seen at least 93 million miles away) jab up and fall back in four minutes. The ghostly corona waxes and wanes...
...Walter Baade of Mt. Wilson, Calif, photographed the proper part of the sky with infra-red light. His plate showed a dim, ghostly shape (see cut). Drs. Stebbins and Whitford, encouraged, used infra-red light of still longer wave length. They attached a photoelectric cell and an infra-red filter to the Mt. Wilson 60-inch telescope and swept it back & forth across the area where the nucleus ought to be. Their calculations showed a strong elliptical bulge. The happy astronomers did not claim that this was the Milky Way's actual nucleus. But they were sure that...
...questions or less, the panel tries to identify some object, suggested by a listener. Samples: Ben Hur's chariot, the lost arms of the Venus de Milo, a keyhole, Harvey (Mary Chase's mythical rabbit). An offstage filter mike confidentially cuts listeners in on the secret. Producer Herb Polesie (rhymes with so-lazy) provides the humor, asking such Oscar Levantine questions as "Can I give it to my mother-in-law?" or "Can I do it to my wife?" But the program's popularity is due largely to the expert questioning of Fred, Florence and Bobby...
...such small things as an "ex" omitted or a cipher added can misinform millions, TIME researchers will continue putting black marks against themselves in "The Black Book"-TIME will keep on printing your corrections in Letters-and TIME editors, writers, management will do all they can to make the filter ever finer. With your help and with constant vigilance here, someday we may be able to whittle TIME'S boners down to near zero...