Fixing the problem with the kilogram.
The “reference kilogram” is a lump of metal in France — the kilo being the only metric measurement not based on some objective standard. A project is underway to replace the kilo with something independently reproducible: perfectly spherical balls of based onCarbon-12. Incidentally, these new kilos would also be “the roundest objects in the world.”
Continue reading… “Fixing The Official Kilogram”
