| Citation | Distinguished for his work in mathematical physics. Made substantial contributions to ballistics, embodied in the official 'Text-Book of Anti-Aircraft Gunnery.' An authority on the relation of optical and X-ray spectra to atomic structure. Principally known for his origination of the concept of the 'self consistent field' in the many-electron problem. This fructified in much work by himself and others on the determination of atomic energy levels and wave functions, the analysis of X-ray scattering, etc. Calculated the successive ionization potentials of the elements. Has made valuable contributions to the theoretical elucidation of experimental work on the Heaviside layer. |