He called it a neutron, and imagined it as a paired proton and electron. There was no evidence for any of these ideas. Chadwick kept the problem in the back of his mind while working on other things.

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 ...

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

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, "I am afraid neutrons will not be of any use ...

This was accepted and scientists used models that included the neutron for a further 20 years before it was actually discovered. It wasn't until 1932 that James Chadwick was able to prove its ...

Robert Oppenheimer, the visionary physicist who directed the Los Alamos Laboratory; Ernest Lawrence, Nobel laureate and pioneer of the cyclotron; James Chadwick, discoverer of the neutron ...