James Chadwick (1891-1974) was a British scientist.
Educated at Manchester University, and worked together on the gamma-ray emission led Ernest Rutherford, 1st Baron Rutherford of Nelson. When World War I broke out, he was researching beta ray decay in Germany. Chadwick was arrested the German government, because it is considered as an enemy. After the war he joined Ernest Rutherford at Cambridge. She wears a light scattering of alpha particles to prove that the atomic number of an element with nuclear charge. He and Rutherford made a proposal which stated that in essence there are uncharged particles, but they have not been able to detect particles was experimentally until 1932. In that year Chadwick succeeded in showing the existence of neutrons.
He received the Nobel Prize in 1935. During World War II, Chadwick led a group of British scientists developed the atomic bomb.
