Feynman, Richard (1918–1988)Raised in an assimilationist Jewish household in Far Rockaway, New York, Richard Phillips Feynman attended the Massachusetts Institute of Technology for his undergraduate studies before beginning doctoral work in physics at Princeton University. His graduate work was interrupted by the outbreak of World War II. Feynman was recruited to work at the top-secret Los Alamos Laboratory in New Mexico, one of the central sites of the sprawling wartime Manhattan Project, whose aim was to design and build nuclear weapons. Early on, Feynman emerged as a young leader at the laboratory, working alongside senior physicists like Hans Bethe in the theoretical physics (or T) division. In fact, Feynman was promoted to group leader within T Division early in 1944, making him the youngest group leader at Los Alamos. His research during the war focused on ways to calculate how neutrons—tiny, electrically neutral constituents of atomic nuclei—would behave inside a slab of fissionable material like uranium.
Immediately after the war, Bethe recruited Feynman to teach at Cornell University. While there, Feynman returned to a challenge that had stymied the world's theoretical physicists for decades: how to rectify quantum theory (which treated matter at the scale of atoms and parts of atoms) with special relativity (which treated matter at speeds comparable to the speed of light). For years, every effort to unite the two main pillars of modern physics had led to mathematical nonsense: infinities spoiled every calculation, rather than yielding finite numbers. Feynman invented an idiosyncratic means of breaking down the calculations and representing them, piecemeal, by simple line drawings (now known as “Feynman diagrams”). With the aid of the diagrams, Feynman demonstrated how to isolate and ultimately remove the infinities. His solution was formally quite distinct from other efforts, pursued independently by Julian Schwinger and Sin-Itiro Tomonaga, although Freeman Dyson ultimately demonstrated their mathematical equivalence. Feynman shared the Nobel Prize in Physics with Schwinger and Tomonaga for this work in 1965...