Redefining the ampere
In 2014, an international group called the BIPM agreed to redefine four common units of measurements--the kilogram, the ampere, the kelvin and the mole.
These units of measurement make up the so-called International System of Units or SI. In total, there are seven SI base units—meter, kilogram, second, ampere, kelvin, mole, and the candela. Work is already under wa... » read more