For four years, James Chadwick was a prisoner of war in Germany ... seem to be the only particle in the nucleus. As they studied atomic disintegration, they kept seeing that the atomic number ...

Photo: Atomic bomb test explosion in Alamagordo, New Mexico, July 16, 1945. AP/Wide World Photos In 1932, James Chadwick discovered the neutron, a small atomic particle with mass but no charge.

However, there was still a difference between the atomic number of the atom and ... It wasn't until 1932 that James Chadwick was able to prove its existence. Chadwick used a version of ...

For four years, James Chadwick was a prisoner of war in Germany ... seem to be the only particle in the nucleus. As they studied atomic disintegration, they kept seeing that the atomic number ...