Chien-Shiung Wu was an experimental physicist and the first person to demonstrate parity violation in electro-weak beta decay of Cobalt-60, a major break-through in particle physics. Although she designed and executed the elaborate experiment in 1956, the Nobel prize went to her male colleagues: Two theoreticians named Tsung-Dao Lee and Chen-Ning Yang who were the first to have the idea that parity could be violated, but who were not taken seriously without Wu´s experimental proof. For her contribution to particle physics, Wu is known as “the First Lady of Physics,” the “Chinese Madame Curie,” and the “Queen of Nuclear Research.”