EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY
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Norman Foster Ramsey Jr (1915-2011), American physicist with molecular beam equipment. Ramsey was awarded the 1989 Nobel Prize in Physics for the invention of a technique that measured the electromagnetic radiation frequencies most readily absorbed by atoms and molecules. This work lead to the development of the atomic clock. Photographed at Harvard University, Cambridge, Massachusetts, USA, in 1952.
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