John T. Lewis

John Trevor Lewis (15 April 1932 – 21 January 2004) was a Welsh mathematical physicist who made contributions to areas including quantum measurement, Bose–Einstein condensation and large deviations theory. He was a senior professor at the Dublin Institute for Advanced Studies (DIAS) in Ireland from 1972, serving as the director of the School of Theoretical Physics from 1975 until his retirement in 2001. He also founded the Communications Networks Research Institute at Dublin Institute of Technology.

Academic career Lewis was born in Swansea, Wales, and was educated at Cardiff High School and then the Royal Belfast Academical Institution. In 1969 he spent a year visiting Rockefeller University and the Institute for Advanced Study. In 1972, he moved to the Dublin Institute for Advanced Studies on the retirement of John L. Synge, From 1985 to 1987 he was president of the Irish Federation of University Teachers.

Lewis was also a founder of, and chief scientist at, Corvil, a company specialising in measurement and performance of Internet traffic.