Word: warm
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Dates: during 1950-1959
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...have far to look. During World War II, Menzel had left astronomy to become a radar expert. One job (as chairman of the Wave Propagation Committee of the Joint Chiefs of Staff) was to study the effect of atmospheric irregularities on radar waves. Sometimes a layer of warm air makes the waves wander oddly, producing deceptive ghosts on the radarscope. Warships have shelled empty ocean, thinking an enemy was there. Since light waves and radar waves behave in much the same way, Menzel reasoned that the same irregularities might produce optical ghosts resembling flying saucers...
Some optical ghosts are common: the ordinary mirages which nearly everyone has seen. Commonest of all is "water-in-the-road," which is caused by a thin layer of warm air above sun-heated pavement. The two layers (cold and dense above, hot and less dense below) "refract"* upward the light that reaches them from the distant sky. A motorist sees shining water (really sky) lying in the road. In hot deserts this sort of mirage is extremely deceptive...
Partly cloudy and continued warm today. Sunday fair and cooler...
...named "Belles On Their Toes." It continues the story of a prolific female engineer, her twelve miraculously self-sufficient off-spring, and a servant named Hoagy Carmichael. It is not an insufferably hilarious picture. In the maudlin machinations of twelve small children there is probably warm, lovable, nostalgic, human appeal, if you happen to like that sort of thing...
Once again in 1825 the College saw fit to renovate its by-laws, this time coming up with 153 regulations. Among other things, vacations were re-scheduled, because it was felt that warm weather served to incite riotous students...