Hendrik Lorentz and Niels Bohr. Albert Einstein arrived on the Caltech campus for the first time in 1931 to polish up his Theory of General Relativity, and he returned to Caltech subsequently as a visiting professor in 1932 and 1933.
During World War II, Caltech was one of 131 colleges and universities nationally that took part in the V-12 Navy College Training Program which offered students a path to a Navy commission. The United States Navy also maintained a naval training school for aeronautical engineering, resident inspectors of ordinance and naval material, and a liaison officer to the National Defense Research Committee on campus. During the war, some scientists from Caltech, including J. Robert Oppenheimer, Richard Tolman, and Robert Bacher, were instrumental in the Manhattan Project and contributed to critical aspects of the atomic bomb's development.
Caltech was also directly involved in other bomb-related research with a group led by Charles Lauritsen which assisted in the development of the high-explosive …
