中文 English

Manufacturing Bits: Nov. 27


New kilogram definition After years of debate and scientific work, a group of delegates from 60 countries have voted to redefine four key unit measurements—the kilogram, electric current (ampere), temperature (kelvin), and the amount of substance (mole). The vote took place at the recent 26th General Conference of Weights and Measures. Hosted by the International Bureau of Weights and Mea... » read more