of Radiology. In 1912 he became the youngest president of the Institution of Electrical Engineers and served two terms. In 1906 and 1911 he was invited to deliver the Royal Institution Christmas Lecture on Signalling to a Distance and Modern Electricity respectively. References External links Duddell's Singing Arc on '120 Years of Electronic Music' Obituary, Proceedings of the Institution of Electrical Engineers, 1918, Volume 56, pp 538–540 1872 births 1917 deaths Fellows of the Royal Society English electrical engineers English physicists English inventors