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May 31, 2006, 5:04 PM EDT / Source: The Associated Press

The original manuscript of a paper Albert Einstein published in 1925 has been found in the archives of Leiden University’s Lorentz Institute for Theoretical Physics, scholars said Saturday.

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The handwritten manuscript titled “Quantum theory of the monatomic ideal gas” was dated December 1924. Considered one of Einstein’s last great breakthroughs, it was published in the proceedings of the Prussian Academy of Sciences in Berlin in January 1925.

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Einstein manuscript found in Netherlands

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