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Kilogram Redefined. The Metric System Overhaul Is Complete
vendredi 16 novembre 2018, 21:28 , par Wired: Cult of Mac
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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59 sources (15 en français)
Date Actuelle
jeu. 25 avril - 22:50 CEST
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