Do the best you can until you know better. Then when you know better, do better. – Maya Angelou

Mr. Walker's Classroom Blog

Tag: International

  • The IPK is Actually Older Than I Am!

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    by

    MrWalker
    in

    But it doesn’t matter, it has been replaced with the Kibble balance. Of course, it may or may not be a step forward.  Read more about it here in the article on The Atlantic: https://www.theverge.com/2018/11/13/18087002/kilogram-new-definition-kg-metric-unit-ipk-measurement. Why isn’t this necessarily a step forward?  Why is it?