|Norman F. Ramsey developed the hydrogen maser, which led to the cesium atomic clock. (ASSOCIATED PRESS/FILE)|
Norman Ramsey, 96; his love of physics led to a Nobel Prize
Dr. Ramsey, of Brookline, won the Nobel Prize in Physics in 1989. His best-known work involved measuring gradations of atomic energy levels. This system of measurement is known as the separated oscillatory field method. He was a professor of physics emeritus at Harvard. Dr. Ramsey died Friday. Services are private, but a memorial service will be held at Harvard University at a later date.