Word: disks
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Dates: during 1940-1949
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...iriscope," can then be projected on a screen to show the scene's original tints, somewhat faint but true. Though few except Birch-Field had suspected it, the colors had been registered in the structure of the film since its first exposure. The iriscope is a simple transparent disk that fits over the projector's lens and is dyed with the colors of the spectrum in concentric circles from blue on the inside...
...cosmic eye this particular universe -the Milky Way-is a wispy thing, a puff of tiny particles which are billions of stars. Somewhat disk-shaped, it floats in space, spinning on its shorter axis. The sun is one of these stars, located some four-fifths of the way out from center of the universe toward the edge. At that point its spinning motion is 155 miles per second, yet it takes 200 million years to round the circuit. Ten times the earth has been around, clinging to the sun, from which, scientists believe, the earth spun off two billion years...
There are exceptions. Some stations merely hired "disk-jockeys" to ride herd on swing records, in the traditional milkman's matinee style. WJZ, New York, evolved a six-hour, all-musical program in which every word except the news flashes is sung. A chorus, jam band and harpsichord render the station breaks in such senseless jingles as this...
Some 80 of his thousands of X-rayed spores germinated with enlarged, disk-shaped* chloroplasts. Since this abnormality has persisted for almost ten years in his ferns, Knudson concludes that the chloroplasts of useful plants may also be enlarged for good, increasing their ability to perform the chemical reaction on which agriculture, and all life, is based...
...disk-or lens-shaped chloroplasts of most plants are capable of a remarkable movement: when light is weak, they turn toward it their flat surface; when light is strong, they present only their edges. This tends to equalize their rate of photosynthesis...