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Metrology

Metrology

Tiny optical clock is 100 times better than previous chip-based timekeepers

26 May 2019
Clock on a chip
Bean counter: this vapour cell is at the heart of NIST’s next-generation miniature atomic clock. (Courtesy: Hummon/NIST)
A tiny optical clock that is small enough to fit onto three computer chips has been created by physi

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Sam Jarman is a science writer based in the UK
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