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Val Fitch dies at 91; Nobel laureate studied matter, antimatter
Val Fitch dies at 91; Nobel laureate studied matter, antimatter

Physicist Val Fitch was not a lawbreaker, but he is famous for broken laws. In a classic 1960s series of experiments, Fitch and his Princeton University colleague James Cronin proved that one of the key laws of physics hitherto thought immutable — that matter and antimatter operate by the same set of rules — could sometimes be broken. Their feat won them the 1980 Nobel Prize in physics and offered the first partial explanation for why we live in a universe made of normal matter instead of antimatter. According to conventional laws of physics, the equal amounts of matter and antimatter produced in the Big Bang that created the cosmos should have annihilated each other, leaving...

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