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CESIUM ATOMIC CLOCKS
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MIT scientists present a plan to make atomic clocks even more accurate | SYFY WIRE
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NIST Launches a New U.S. Time Standard: NIST-F2 Atomic Clock | NIST
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/cdn.vox-cdn.com/uploads/chorus_asset/file/6551799/Screen_Shot_2015-04-22_at_1.08.52_PM.0.png "Scientists just got one step closer to building the world's most perfect clock - Vox")
Scientists just got one step closer to building the world's most perfect clock - Vox
