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  • Measure for Measure
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A matter of time

Nature Physics volume 13, page 1234 (2017)Cite this article

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The arrival of a new type of timekeeper heralds the end of the second as we know it, as Helen Margolis explains.

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  1. National Physical Laboratory, London, TW11 0LW, Teddington, UK

    Helen Margolis

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  1. Helen Margolis
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Correspondence to Helen Margolis.

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Margolis, H. A matter of time. Nature Phys 13, 1234 (2017). https://doi.org/10.1038/nphys4327

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