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Kilogram Redefined. The Metric System Overhaul Is Complete
vendredi 16 novembre 2018, 21:28 , par 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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56 sources (32 en français)
Date Actuelle
mar. 29 avril - 14:05 CEST
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