Hartree, Douglas Rayner
Mathematician and physicist, born in Cambridge, Cambridgeshire, EC England, UK. He graduated from Cambridge after working on the science of anti-aircraft gunnery during World War 1. He was professor of applied mathematics and theoretical physics at Manchester (1929--45), returning to Cambridge as professor of mathematical physics in 1946. His work was mainly on computational methods applied to a wide variety of problems, ranging from atomic physics, where he invented the method of the self-consistent field in quantum mechanics, to the automated control of chemical plants. At Manchester he developed the differential analyser, an analogue computer, and was deeply involved in the early days of the electronic digital computer.