• subtext@lemmy.world
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    2 months ago

    The redefinition of the mole in 2019, as being the amount of substance containing exactly 6.02214076×10^23 particles

    Since the 2019 SI redefinition, avogadro’s number is a constant.

    https://en.wikipedia.org/wiki/Avogadro_constant

    Edit: looks like we were both right! I was reading through your link and it seems the work reported by the NIST led to the exact definitions for Avogadro’s number and the Planck constant.