CORBIN O'GRADY STUDIO / SCIENCE PHOTO LIBRARY CORBIN O'GRADY STUDIO / SCIENCE PHOTO LIBRARY
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John Stewart Bell (1928-1990), British physicist, at CERN (the European particle physics laboratory). Bell is most famous for originating Bell's theorem in the mid-1960s. Bell's work extended the EPR paradox to derive what is known as Bell's inequality. This implies that certain types of physical theories are unable to account for all the predictions of quantum mechanics, raising philosophical questions about the limits of what is possible with such theories. Photographed in 1989, at the Large Electron-Positron Collider in CERN, Switzerland.
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