Carl D. Anderson, winner of the Nobel Prize in physics in 1936 for his discovery of the positron, died January 11 at his home in San Marino, Calif. He was 85 years old. Anderson was Board of Trustees Professor of Physics Emeritus at the California Institute of Technology, Pasadena.
In 1923, Anderson enrolled at Caltech, where he remained for the next 50 years. He received his B.S. in 1927 and his Ph.D. in 1930, both in physics, then served as a research fellow until 1933, when he joined the faculty of the physics department. He retired in 1976.
As a graduate student, Anderson worked with Robert Millikan, then president of Caltech, who had received the Nobel Prize in 1923 for determining the charge of the electron. With Millikan, Anderson designed a cloud chamber to measure the energy of electrons and other particles. Anderson studied the particles by photographing the vapor ...