A manuscript with calculations made Albert Einstein as he attempted to formulate his theory of relativity has sold at auction for €11m (£9.7m, $13m)
The sale at Christie’s auction house in Paris broke the record for an autographed scientific document.
It is one of just two papers that show the theoretical physicist’s workings on his great scientific breakthrough.
The theory, published in 1915, transformed humankind’s understanding of space, time, and gravity.
The manuscript of calculations was penned between 1913 and 1914 Einstein and his Swiss colleague Michele Besso, who kept hold of the document.
Christie’s auction house praised Besso for his forward-thinking in saving the manuscript.
The papers contain calculations in black pen and according to Mr. Belloy, show a number of errors in the journey to formulate the theory.
Christie’s said the sale had “attracted collectors from all around the world who recognized the importance of the document”.
However, the buyer of the 54-page paper has not been revealed.
Einstein’s theory of relativity shed light on the birth of the universe, planetary orbits and black holes.
Last May a letter written Einstein containing the theory’s most famous equation, E=mc², sold for more than $1.2m (£897,000).
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