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John Morris was born in London in 1872, the eldest son of Jas. Morris, MD. He married Annie Elizabeth Frances Macgregor in 1917. He was educated privately and at University College London. He became an assistant to Professor Fleming at University College London, 1894-1898; specialising in subjects connected with illumination and cathode ray oscillographs. From 1930 to 1938 he was Professor of Electrical Engineering at the University of London. He was Honorary Research Associate in Electrical Engineering at University College London from 1939, and Professor Emeritus of Electrical Engineering at the University of London from 1938. He was a fellow of University College and of Queen Mary College, London. He was the inventor of a portable direct reading anemometer. He published 'Cathode Ray Oscillography' with J.A.Henley in 1936; 'Sir Ambrose Fleming and the birth of the valve', in 1954; and numerous papers in scientific journals. He died on 18 March 1959.