Over the next few years, le Système international d'Unités or SI units may replace the presently used metric system in reporting laboratory data. The change to SI units will likely result in some ...
Weighty matters: a platinum-iridium kilogram belonging to the US National Institute of standards and Technology. (Courtesy: J.L. Lee/NIST) Metrologists and policy-makers from 60 countries around the ...
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