SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
For editorial use only.
Alan Turing (1912-54), British mathematician. Turing was educated at Cambridge and Princeton. In 1937 he described a theoretical computer (a Turing machine) in rigorous mathematical terms, formalising the previously vague concept of computability. During the Second World War he worked as a code breaker, then continued work in computing. In later years he worked on Artificial Intelligence, devising the Turing test to decide whether a computer can be thought of as truly 'intelligent'. Turing committed suicide when prosecuted for his homosexuality, at that time a criminal offence.
Model release not available. Property release not required.