The Avogadro constant : origin of a natural constant / Torsten Schmiermund.
In May 2019, the new SI definitions for ampere, kilogram, kelvin and mole came into force. For the mole, the SI unit of the amount of substance, the Avogadro constant was newly determined and its value set as the defining constant. But: How did it come about that a comparative number became a natura...
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