On June 14, 1736, Charles-Augustin de Coulomb was born in France.
The name might seem vaguely familiar. In an electrical engineering or physics class that you struggled to keep awake in, the prof defined the unit of electric charge.
The coulomb, or just C, is the unit of electric charge. It is the charge transported by a constant electrical current of one ampere in one second.
C comes into plays in capacitance, the storing of charge. C is also the amount of excess charge on a capacitor of one farad charged to a potential difference of one volt.