TIL that the International System of Units is expected to receive its first overhaul since 1960 in November 2018 - changing the kilogram, ampere, kelvin, and mole to be defined by observable constants - thus making SI wholly derivable from natural phenomena as originally envisioned

TIL that the International System of Units is expected to receive its first overhaul since 1960 in November 2018 - changing the kilogram, ampere, kelvin, and mole to be defined by observable constants - thus making SI wholly derivable from natural phenomena as originally envisioned https://en.wikipedia.org/wiki/Proposed_redefinition_of_SI_base_units#Impact_on_base_unit_definitions justfortrees July 30, 2018 at 08:10PM