iStock/Thinkstock(PARIS) — Scientists from 60 countries voted in a historic event in Versailles, France on Friday to change the definition of the kilogram, basing it on electric currents rather than a single solid object. The decision, made at the General Conference on Weights and Measurements, will retire the object known as “Le Grand K,” a …
Nov 16
New definition of kilogram ditches old metal object for natural constants
