Word: parabolas
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Dates: during 1930-1939
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...state of radioactivity. After 15 minutes the positrons were still darting out 30% as fast as at first: after 30 minutes 9% as fast; after 45 minutes 2.7%. Theoretically the radiation, though soon dwindling beyond the recording point, would never quite expire. A curve representing it would be a parabola approaching but never quite touching its asymptote...
...fossil-finders, taking care to leave their finds undisturbed until trained diggers come, notify the National Research Council at No. 2101 Constitution Ave. N. W., Washington, D. C.-ED. Marconi's Parabola...
...issue of TIME carried an article entitled "Marconi's Parabola." I would like to know if any domestic radio companies have successfully developed transmitting and receiving equipment along these lines, and also whether Marconi has representation in this country...