Came to the United States, 1939, naturalized, 1945. Instructor mechanics U. Warsaw, 1927-1939. Special lecturer Massachusetts Institute Technology, also instructor mathematics Tufts College, 1940-1941.
Instructor physics College City New York, 1942-1944. Assistant professor physics U. Rochester, 1944-1945. Physicist Bureau Ordnance, Navy Department, 1945-1948.
Research professor mechanics Illinois Institute Technology, since 1948. Cons. Air Force Intelligence Center, 1950-1951.