Faraday (F), electric charge
The Faraday constant (F) shows the electric charge in one mole of electrons. The constant is named after the british physicist Michael Faraday. First, the F was achieved by weighing the amount of silver absorbed in an electrochemical reaction, in which you register an electrical current passing through in a given time. The measured weight would be used to calculate the Avogrado number. Modern research continues to search for new ways to more exactly precise the F constant and thereby also NA.