Re:An old artifact kept in a vault outside Paris is no longe...
by 6006135 on Friday May 17, 2019 @04:49PM
(#19943433)
Don't know why this was downvoted.
But here is the answer [1]: "The new definition only became possible when instruments were devised to measure the Planck constant with sufficient accuracy based on the IPK definition of the kilogram."
But here is the answer [1]: "The new definition only became possible when instruments were devised to measure the Planck constant with sufficient accuracy based on the IPK definition of the kilogram."
https://en.wikipedia.org/wiki/Kilogram