アルベルト・アインシュタインのインスタグラム(alberteinstein) - 12月3日 23時05分

This 1950 handwritten letter from Albert Einstein is up for auction today at the Kedem Auction House. In the letter, which was sent to Einstein's former assistant and scientific partner Ernst Gabor Strauss, the famed physicist discusses his early work on unified field theory.

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