Albert EinsteinFrom Newsweek:
What newly released papers reveal about the physicist.
On July 22 the Einstein Papers Project, located at the California Institute of Technology in Pasadena, will release the 12th volume of letters written or received by Albert Einstein—791 of them—plus transcripts of several notable lectures and interviews the physicist gave, covering the year 1921. It was a momentous 12 months. You might think there are no new revelations to be made about him, but for Einstein groupies the current volume addresses at least one key question: what did Einstein know about an 1887 experiment that discovered that the speed of light is invariant, regardless of the observer's speed or direction of motion—an idea that forms the core of special relativity and that Einstein did not mention when he laid out the theory of special relativity in a 1905 paper?
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