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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.

The neutron plays a fundamental role in the universe and its discovery was at the heart of developments in nuclear physics in the first half of the 20th Century. Prof Val Gibson tells Melvyn Bragg ...

Another cartoon classic has been given the Pop Vinyl treatment. Funko Pop has released it's The Adventures of Jimmy Neutron, Boy Genius collection, featuring the show's three main characters.