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.

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

at N.T.P. It is to be expected that many of the effects of a neutron in passing through matter should resemble those of a quantum of high energy, and it is not easy to reach the final decision ...

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 ...

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.