Word: sunspots
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Dates: during 1940-1949
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...author of "Sun Spots in Action" and perhaps the greatest living authority on them, notes that this year is also riding the crest of the normal 11-year sunspot cycle...
Weather bureaus, Stetson admits, can make little practical use out of sunspot cycle data, since they only suggest trends and nothing more. Furthermore, it is is impossible to tell where the effect will be felt. Last winter the apex of sunspot activity was received in Europe, and this winter a shift to the North American Continent has occurred...
Back in 1934 two budding economists wondered, as others had before them, if sunspots affected agricultural production and thus food prices. When they studied sunspots they found that their wax & wane apparently bore no relation to the rise or fall of agricultural production. But they were amazed to find that sunspot activity coincided with the rise & fall of industrial production and of stockmarket prices...
Radio waves in the short wave band are peculiarly sensitive to solar conditions. Their normal line of travel is to the ionosphere (which begins 30 miles up), and then back to the earth by reflection. When the ionosphere is supercharged, as it is during sunspot periods, most of the radio short waves are absorbed, and transmission breaks down...
Meteorologists expect that the sunspot problem will recur with increasing intensity until 1948 or 1949. Spots run in eleven-year cycles-for reasons science has still to determine. The last big year...