William Duddell

William Du Bois Duddell (1 July 1872 - 4 November 1917) was a British physicist and electrical engineer. He was privately educated in the UK and France and rose quickly through the prestigious City & Guilds Schools via scholarships. Duddell was an ingenious instrument maker. According to one obituary, at the age of four he constructed an automaton by combining a toy mouse with a clockwork. His inventions include the moving coil oscillograph, as well as the thermo-ammeter and thermo-galvanometer. He died at age 45.