Have you read any good books lately? http://www.lizpurcell.com/stmap_2a770.html?levitra.xalatan.verapamil orgain protein powder smoothie recipes  Known as the "First Lady of Physics," or the "Chinese Marie Curie," Chien-Shiung Wu was a Chinese-American physicist whose famous experiment showed that the law of conservation of parity did not hold for the weak nuclear force. In the 1950s, it was believed systems that were mirror images of one another would behave identically (conservation of parity is still thought to hold for electromagnetic force, gravity and the strong nuclear force). But in the 1950s, two scientists — Tsung-Dao Lee and Chen-Ning Wang — argued that parity wouldn't hold for the weak nuclear force.