Comment on 2019 redefinition of the SI base unitsparentComments−hoten7yRight. So in other words, the SI unit definitions are for scientists wishing to affirm the base units, but the old definitions are superior for education purposes (well, except maybe for the prototype kilogram...)−peter3037yThe pre-prototype kilogram is essentially valid- mass of liter of water. But now in terms of physical constants.
Comments
Right. So in other words, the SI unit definitions are for scientists wishing to affirm the base units, but the old definitions are superior for education purposes (well, except maybe for the prototype kilogram...)
The pre-prototype kilogram is essentially valid- mass of liter of water. But now in terms of physical constants.