theoretical division. Feynman worked on estimating how much uranium would be needed to achieve critical mass.
He developed many experimental devices to test his hypothesis without blowing up Los Alamos. After the war, he followed Hans Bethe to Cornell University. It was here that Feynman developed a simple notation to describe the complex behavior of subatomic particles. This notation became known as Feynman Diagrams.
In the 1950s, he moved to Cal Tech. In 1965, he, along with Julian Schwinger and Shinichiro Tomonaga, received the Nobel Prize
