About Douglas Hartree
Douglas Rayner Hartree (27 March 1897 – 12 February 1958) was an English mathematician and physicist most famous for the development of numerical analysis and its application to the Hartree–Fock equations of atomic physics and the construction of a differential analyser using Meccano. == Early life and education == Douglas Hartree was born in Cambridge, England. His father, William, was a lecturer in engineering at the University of Cambridge. His mother, Eva Rayner, was president of the National Council of Women of Great Britain and first woman to be mayor of the city of Cambridge. One of his great-grandfathers was Samuel Smiles; another was the marine engineer William Hartree, partner of John Penn. Douglas Hartree was the oldest of three sons who survived infancy. A brother and sister died in infancy when he was still a child, but his two brothers would later also die. Hartree's 7-year-old brother John Edwin died when Hartree was 17, and Hartree's 22-year-old brother Colin William died from meningitis in February 1920 when Hartree was 23. His maternal cousin was the geologist Dorothy Helen Rayner. Hartree attended St Faith's School in Cambridge, then Bedales School, returning to Cambridge for his degree studies at St John's College, Cambridge, which the first World War interrupted.
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