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Time's Romance of the Decimal Point

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Science  19 Nov 2004:
Vol. 306, Issue 5700, pp. 1310-1311
DOI: 10.1126/science.306.5700.1310

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Summary

BOULDER, COLORADO-- Time's running out for the cesium atomic clock. To squeeze additional decimal points of accuracy out of the world's top timekeepers, researchers are turning to some of the more esoteric corners of quantum mechanics.