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  • I work in a greengrocer's, will we need a Kibble balance after the kilogram vote next week?
    And if so, how does it work? Can we put carrots on it?

  • It defines an amount of mass in terms of Planck's constant h, rather than the arbitrary and changing lumping metal in Paris. The kibble balance is just a fancy current balance you get in most undergrad lab courses.

  • I feel I should apologise for my work colleagues’ behaviour, since it is them to blame for all this weight scaremongering. I feel partly to blame.

    That said, I’d get your scales calibrated anyway. All those femtogrammes add up and you might find yourself quids-in if it has been over-reading.

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