Born in Budapest, Hungary. Graduated from Berlin Higher Technical School, awarded the title of Chemical Engineer and Doctor of Engineering. He also received honorary doctorates from the University of Wisconsin, the University of Washington, the University of Chicago, the University of Pennsylvania and the University of Leuven. /kloc-went to the United States in 0/930 and became an American citizen in 0/937. 1930 lecturer at Princeton University. 1937 Professor of Physics, University of Wisconsin. 65438-0946 Professor of University of Chicago. 1952- 1957 and 1959- 1964 are two members of the General Advisory Committee of the U.S. Atomic Energy Commission. He is a member of the National Academy of Sciences, the American Mathematical Society, the american physical society, the American Philosophical Society and the American Nuclear Society, and has served as the chairman of the American Nuclear Society and the american physical society.