3 ms·
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 purpos
by hoten 7y ago
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...)
- peter303 7y agoThe pre-prototype kilogram is essentially valid- mass of liter of water. But now in terms of physical constants.