Titterton, Sir Ernest William (1916-1990), was professor of nuclear physics at the Australian National University in Canberra, Australian Capital Territory, from 1950 to 1981. Titterton was born on March 4, 1916, near Tamworth, England, and attended the University of Birmingham. Between 1943 and 1947, he was a member of the British atomic bomb missions at Los Alamos, New Mexico, United States. He was also a senior member of the timing group at the test of the first atomic bomb in New Mexico in 1945. From 1947 to 1950, he led a research team at the Atomic Energy Research Establishment in Harwell, United Kingdom. Titterton joined the Australian Atomic Energy Commission’s scientific advisory committee in 1956. He died on Feb. 8, 1990.