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25.7 x 39.9 cm ⏐ 10.1 x 15.7 in (300dpi)
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Chien-Shiung Wu (1912-1997), Chinese-US physicist, in 1958. She is working in her laboratory at New York's Columbia University, USA, where she became physics professor in 1957. In 1956, Wu and Tsung-Dao Lee experimentally confirmed a theory that parity is violated during weak radioactive decay, overturning many basic assumptions of particle physics. Wu experimentally confirmed other particle theories, as well as studying muonic atom X-ray spectra.
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