For four years, James ... oversaw Chadwick's PhD in 1921 and then made him assistant director of the lab. Chadwick's own research focused on radioactivity. In 1919 Rutherford had discovered ...

AP/Wide World Photos In 1932, James Chadwick discovered the neutron, a small atomic particle with mass but no charge. This turned out to be an extremely useful tool for bombarding atomic nuclei.

Already in his original work on the properties of high-speed neutrons Chadwick recognised their great effectiveness in producing nuclear transmutations1. Especially after the discovery of ...

Prof Val Gibson tells Melvyn Bragg about the device used in the discovery of the neutron. When later interviewed for the New York Times, Chadwick said ... a passage in James Joyce’s Finnegans ...

This view of the atomic nucleus changed when James Chadwick discovered the existence of the neutron in 1932, for which he won ...