Chien-Shiung Wu,84, a physicist who worked on the Manhattan Project and later conducted a landmark experiment in physics, died of a stroke Sunday in New York. Born in Shanghai, Ms. Wu came to the United States in 1936 and received her doctorate in physics from the University of California at Berkeley. She went on to teach at Smith College and Princeton University.
In the 1940s, Wu worked on the Manhattan Project, a covert project to build an atomic bomb in World War II. She joined Columbia University after the war and taught there for more than three decades.