Word: coloring
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Dates: during 1940-1949
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...West Indies and the Caribbean, which she has recreated in forms of her own. Bal Nègre offers a variety of them that, from a theater standpoint, seems badly lacking in variety. On its own terms, however, Bal Nègre often has a good deal of color and excitement, and in their own way Miss Dunham and her company dance, slither and writhe expertly...
This difference allows astronomers to photograph the brighter parts of the sun's atmosphere with a "spectroheliograph," a prism spectroscope which casts sunlight of only one color on a photographic plate. The light from the solar atmosphere, glowing in that color, shows in the picture. Most of the dazzling light from the surface, being of other colors, is excluded by the spectroscope...
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...
...Bowen examined seawater under an ultraviolet microscope. Every cubic inch, they discovered, contained about 1,500,000 submicroscopic particles 1/50,000th of an inch in diameter. These particles reflect violet, blue and green light rays back to the surface, where they combine to give ocean water its characteristic color. When water looks green, it contains larger particles (silt or small living creatures) which reflect other kinds of light...
...hoped that last week's public reception of its sets might influence the Federal Communications Commission to decide in favor of its black & white television, rather than Columbia Broadcasting System's color televising. The more sets RCA sells, the harder FCC will find it to decide in favor of CBS's color, which RCA sets cannot receive. If RCA can force black & white television now, it hopes to capture a big chunk of the market, hold it till it is ready with its own electronic color, some five years hence...