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JILA Fellow Judah Levine, standing next to the world's standard for time, the NIST clock,
which uses atomic transitions in cesium atoms to keep time to within a few nanoseconds per
year. (Copyright Geoffrey Wheeler) |
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JILA Fellow Judah Levine, standing next to the world's standard for time, the NIST clock,
which uses atomic transitions in cesium atoms to keep time to within a few nanoseconds per
year. (Copyright Geoffrey Wheeler) |
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