Word: schonland
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Dates: during 1934-1934
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...positively charged Earth; the main stroke traces the leader's path in the opposite direction. New photographs with a special speed camera show the leader stroke varying in length from 1.6 to 4.7 miles, in speed from 810 to 19,000 miles per second.-Dr. B. F. J. Schonland, University of Capetown...
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