[en] This biography has chapters dealing with early work on: X rays; radioactivity; decay products of uranium and thorium; alpha, beta and gamma rays; atomic models; X-ray spectra; artificial disintegration of atoms; nuclear structure; the neutron; Cockcroft-Walton experiments. Other work carried out by Rutherford or in his laboratory, as well as many aspects of international cooperation in the above fields, is also described. (U.K.)