Sir James Chadwick was a British experimental physicist who received the Nobel Prize in Physics in 1935 for his discovery of the neutron. In 1941, he wrote the final draft of the MAUD Report, which inspired the U.S. government to begin serious atomic bomb research efforts. He was the head of the British team that worked on the Manhattan Project during World War II. He was knighted in Britain in 1945 for his achievements in nuclear physics. The Nobel Prize in Physics 1935, announced November 14, 1935. James Chadwick, “for the discovery of the neutron”. James Chadwick: born 1891, Manchester, United Kingdom. Wiki link Data: the Nobel Foundation (CC0).