an Entity references as follows:
Robert Vivian Pound (May 16, 1919 – April 12, 2010) was a Canadian-American physicist who helped discover nuclear magnetic resonance (NMR) and who devised the famous Pound–Rebka experiment supporting general relativity. He became a tenured professor of physics at Harvard without ever having received a graduate degree. Pound was born in Ridgeway, Ontario. Pound's name is also attached to the Pound–Drever–Hall technique used to lock the frequency of a laser on a stable optical cavity.