27 gen 1932 anni - English physicist James Chadwick

Descrizione:

discovers the neutron; the American physicist Carl Anderson identifies the positron (the anti-electron which had been predicted by Paul Dirac a few years earlier); and the British physicist John Cockcroft and the Irish physicist Ernest Walton succeed in transmuting lithium into helium and other chemical elements using high energy protons, popularly referred to as “splitting the atom”.

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