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Person

Harold Urey

Harold Clayton Urey was an American physical chemist whose pioneering work on isotopes earned him the 1934 Nobel Prize in Chemistry. At Columbia University, he successfully isolated deuterium by fractionally distilling liquid hydrogen. His discovery fundamentally changed the understanding of atomic structure and provided the key component for the development of heavy water. Urey later played a significant role in the Manhattan Project, focusing on the separation of uranium isotopes.

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