Robley D. Evans

(1907-1996) born in Lincoln. Physicist, medical researcher, pioneered radioactivity studies, and helped set the standard for permissible human exposure, showed that radioactive potassium-40 could be of use in geologic dating, a technique that permitted accurate dating beyond the carbon-14 technique, recipient of Enrico Fermi Award in 1990, the highest scientific award given by the U.S. Department of Energy. Consult Biographical Encyclopedia of Scientists, 2nd ed ,Vol 1 (Markethouse Books Ltd., 1995) 272-273 and Physics Today obituary, September 1996, pp. 109-110.

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