The quantity capacitance (C) describes how the potential (V) changes if the charge (Q) is changed.
The corresponding unit is farad (F).
potential (V) = charge (Q) / capacitance (C)
History
The first practical capacitor, the so-called "Leiden jar", was (co-)invented
in 1746 by the Dutch scholar Petrus van Musschenbroeck (1692 - 1761) and
had a capacitance of about 7 nF.
