Photo of Albert Einstein.
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Courtesy of Tracey Keifer. Emilio Segre Visual Archives. American Institute of Physics.
Albert Einstein was a German physicist who lived between 1879-1955. Probably the most well-known scientist of the twentieth century, Einstein came up with many original theories and invented modern physics.
He is most famous for his theory of relativity, which makes bold statements about the nature of light and also shows the relationship between mass and energy. Einstein's accurate predictions on the link between gravity with space and time also made him a celebrity.
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