Yes, it's
only micrograms of
difference, but
it's still
really weird:
until 2018, the
kilogram is
defined as
"the weight
of this physic
(
more)
Yes, it's only micrograms of difference, but it's still really weird: until 2018, the kilogram is defined as "the weight of this physical object". So what happens when that object changes?
Thank you to everyone at the National Physical Laboratory! You can visit them at
http://npl.co.uk
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