For four years, James Chadwick was a prisoner of war in Germany. When World War I ended, he returned to his native England to rejoin the mentor of his undergraduate days, Ernest Rutherford. Now head ...

There most probably is a neutron, smallest bit, last resolvable particle of Matter. Last Summer when Dr. W. Pauli of Zurich propounded the idea at Pasadena, the fact was less certain (TIME, June 29).

Click to open image viewer. Replicas of Cavendish Lab. Apparatus (5, l. to r.); obj. ID no. EM.N-08013-A Thompson's cathode ray tube #2, EM.318206 Thompson's cathode ray tube #3, EM.N-08019 Rutherford ...

No energy technology has been more revolutionary than nuclear power.