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Fermat's Library on Twitter: "The first time Albert Einstein wrote down E=mc² https://t.co/GI2LGbkTeN" / Twitter
“The first time Albert Einstein wrote down E=mc²”
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August 27, 2019 at 1:26:54 AM UTC ·
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https://twitter.com/fermatslibrary/status/1165605688833429507
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