![]() ![]() In 1936 Darwin resigned his post in Edinburgh (being replaced by Max Born) to become Master of Christ's College, beginning his career as an active and able administrator, becoming director of the National Physical Laboratory on the approach of war in 1938. He was assisted at the university by Dr Robert Schlapp. Dirac's relativistic theory of the electron. He was the first in 1928, to calculate the fine structure of the hydrogen atom under P.A.M. He then worked for a year at the California Institute of Technology before becoming Tait Professor of Natural Philosophy at the University of Edinburgh in 1924, working on quantum optics and magneto-optic effects. Fowler on statistical mechanics and, what came to be known as, the Darwin–Fowler method. From 1919 to 1922 he was a lecturer and fellow of Christ's College, Cambridge where he worked with R.H. When that research was on a solid footing, he was transferred to the RAF to study aircraft noise. A year later William Lawrence Bragg had him transferred to the Royal Engineers to participate in the work on the localisation of enemy artillery by sound ranging. On the outbreak of World War I, he was commissioned and sent to France as a censor. In a further paper of 1922, he introduced the mosaic crystal model. His two 1914 papers on diffraction of X-rays from perfect crystals became often cited classics. In 1912, his interests developed into using his mathematical skills assisting Henry Moseley on X-ray diffraction. He secured a post-graduate position at the Victoria University of Manchester, working under Ernest Rutherford and Niels Bohr on Rutherford's atomic theory. Darwin was educated at Marlborough College (1901-6) and then studied mathematics at Trinity College, Cambridge graduating MA in 1910. His younger brother William Robert Darwin was a London stockbroker. Darwin's elder sister was the artist Gwen Raverat, and his younger sister Margaret married Geoffrey Keynes, the brother of the economist John Maynard Keynes. His mother was Lady Darwin, Maud du Puy of Philadelphia, Pennsylvania. He was a son of mathematician Sir George Howard Darwin and a grandson of Charles Darwin. Darwin was born at Newnham Grange in Cambridge, England into a scientific dynasty. ![]()
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