|Fig. 1: Picture of Chien-Shiun Wu. (Source: Wikimedia Commons )|
Chien-Shiung Wu was a Chinese-American physicist who made significant contributions to nuclear physics throughout her career. She was born in Liuhe, a village northeast of Shanghai, on May 13, 1912.  She studied at the National Central University in 1930, and graduated in 1934.  Eventually, she came to the US and studied at UC Berkeley, earning her PhD in 1940.  A picture of her is shown in Fig.. 1.
During the war the Manhattan Project was started in an attempt to build an atomic bomb before the Germans could. Wu participated in the SAM ("Special Allied Materials") project, which was concerned with producing enriched uranium using the gaseous diffusion method.  She also made other contributions such as helping to explain the stop-and-go phenomenon observed in the Hanford Reactor in Washington State, as some of her previous work involved the absorption cross-sections of neutrons by xenon and could provide a better understanding of the problem. 
In 1956 Chien-Shiung Wu performed groundbreaking experiments on the conservation of parity in weak interactions.  This work ultimately resulted in Tsung-Dao Lee and Chen-Ning Yang, the physicists who had come up with the idea, being awarded the Nobel Physics Prize in 1957. Wu received a great deal of recognition for her role in the experiment, and eventually went on to become the first female president of the American Physical Society in 1975. 
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 T. C. Chiang, Madame Wu Chien-Shiung: The First Lady of Physics Research (World Scientific, 2013).
 C. S. Wu et al., "Experimental Test of Parity Conservation in Beta Decay," Phys. Rev. 105, 1413 (1957).