William Duddell

William Du Bois Duddell (1 July 1872, in Kensington, London – 4 November 1917, in Wandsworth, London) was an English physicist and electrical engineer. His inventions include the moving coil oscillograph, as well as the thermo-ammeter and thermo-galvanometer. Life and career Duddell was born William Du Bois to Frances Kate Du Bois, who married George Duddell in 1881. At the age of four he constructed an automaton by combining a toy mouse with clockwork. His younger sister Gladys Duddell was a tennis player. Duddell was privately educated in England and France and rose quickly through the prestigious City & Guilds Schools via scholarships.