Word: layered
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Dates: during 1940-1949
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Substance X. In 1929 Dr. Hench noticed that men & women with arthritis suffered less pain when they had jaundice. Women suffered less when they were pregnant. He noticed too that patients who had surgical operations got better for a while (during an operation, the adrenal cortex, or outer layer of the adrenal gland, is stimulated...
...most parts of North America the warm, smoggy air would continue to rise and the winds would disperse it. But Los Angeles' upper air, instead of getting progressively cooler at higher levels, has a peculiar temperature inversion. There is a warm layer, usually at 1,000 to 3,000 ft., which sits on the smog. Prevailing winds from the Pacific High cannot readily blow the heavy cloud away to the east because of the mountains which half ring the city...
With low-hanging stratus (i.e., solid layer) clouds, Project Cirrus was just as successful. Langmuir told how the planes had drawn Greek letters and "racetrack" patterns in stratus clouds by dropping small amounts of dry ice (see cut). Sometimes the cloud was dissipated so completely that blue sky showed through the gaps. Langmuir believes that dry ice can be used to clear clouds from over airports...
...deny Stalin's arrant opportunism. What he shows is that Stalin and the world Communist Party guide their main course on the basis of a hard core of theory, and have done so for 25 years with "amazing consistency." Around the hard core of theory is a hard layer of what Stalin calls program. Around this is a layer of strategy, then an outer husk of tactics...
...Appleton layer reflects certain radio waves around the earth. Sir Edward's experiments proved the possibility of round-the-world broadcasting...