New posts in Metrology

Why is the mole/"amount of substance" a dimensional quantity?

What are the proposed realizations in the New SI for the kilogram, ampere, kelvin and mole?

$\rm Lux$ and $W/m^2$ relationship?

Definition of a year

Why isn't it $E \approx 27.642 \times mc^2$?

The famous drop of $c$

How is a second measured? And why is it measured that way?

Why is the ampere a base unit and not the coulomb?

Why does the metric system use "kilogram" as a base SI unit?

Why a day is divided by 12/24 hours? Why the number 12?