<P> The year 1932 was later referred to as the `` annus mirabilis '' for nuclear physics in the Cavendish Laboratory , with discoveries of the neutron , artificial nuclear disintegration by the Cockcroft -- Walton particle accelerator , and the positron . </P>
<P> The year 1932 was later referred to as the `` annus mirabilis '' for nuclear physics in the Cavendish Laboratory , with discoveries of the neutron , artificial nuclear disintegration by the Cockcroft -- Walton particle accelerator , and the positron . </P>
when was the existence of the neutron confirmed
when was the existence of the neutron confirmed
1932
1932