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Kilogram Redefined. The Metric System Overhaul Is Complete
Friday November 16, 2018. 09:28 PM , from Wired: Tech.
The platinum-iridium cylinder has been scrapped, and the kilogram will now be determined by the Planck constant.
https://www.wired.com/story/new-kilogram-definition-based-on-planck-constant
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