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Metrology: The new and improved kelvin

Metrologists are on a path to redefine the unit of temperature. The freezing point of water will never be the same again, finds Nicola Jones.

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See Editorial, page 890

Nicola Jones is a commissioning editor for Nature's Opinion section.

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Jones, N. Metrology: The new and improved kelvin. Nature 459, 902–904 (2009). https://doi.org/10.1038/459902a

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