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David Brynn Hibbert

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Articles Written By David Brynn Hibbert

why the way we define kilogram metres and seconds changed on may 20

Why the Way We Define Kilogram, Metres and Seconds Changed on May 20

May 20, 2019, marks one of the biggest shake-ups in the history of measurement – and the new standards on how we define units of mass, length, time and so on are not easy to explain.