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The platinum-iridium cylinder used to standardise the kilogram is getting an upgrade – to a complicated process that involves the measuring of light
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Scooped by 16s3d |
Scoop.it!
16s3d's insight:
Le mètre étalon a été supplanté dès 1960. Le kilogramme étalon va bientôt connaître sa révolution technologique et scientifique.
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