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      Digital & 4-Year Archive

      Scientific American September 2004

      Einstein's Compass

      What was it about the magnetism of an iron bar that could divert Einstein from perfecting his celebrated theory of general relativity?

      • By Peter Galison on September 1, 2004

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      More in the September 2004 issue of Scientific American
      • Existential Terroir in Northern California
      • A Century of Einstein
      • Paleolithic Pensioners
      View Full Contents
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