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Sheldon Glashow (b.1932), US physicist and Nobel Laureate. Glashow was educated at Cornell and Harvard, where he became professor of physics in 1967. Glashow produced one of the earliest models linking the electromagnetic and weak nuclear forces. Other workers developed this to include the leptons, then Glashow extended the theory to include the baryons and mesons. This required a new particle property called 'charm', and the prediction of a charmed quark and some new particles. This work paved the way for a theory of quark interactions, Quantum Chromodynamics (QCD), and led to Glashow sharing the 1979 Nobel Prize for Physics. Photographed at CERN in 1979.
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