Eliminating the dependency of physical units and constants on artifacts

Nov 2017
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#1
For example, the SI unit of mass, the kilogram, is (or was) based on an artifact located in France. We now have the ability to define the unit of the kilogram to be based on the Planck constant, by setting it to be fixed as a defined constant, rather than by being dependent on the mass of this artifact:
Kilogram - Wikipedia

 

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