statcoulomb
Statcoulomb, symbol statC, is the unit of electric charge in the CGS electrostatic (Gaussian) system, also known as the electrostatic unit (esu) of charge. It is part of the CGS-ESU family of electromagnetic units that were widely used in physics before the broader adoption of SI units.
In Gaussian CGS units, Coulomb's law is written as F = q1 q2 / r^2, with F in dynes,
Conversions to SI are commonly cited: 1 statC is approximately 3.33564 × 10^−10 coulombs, so 1 coulomb
See also: Coulomb's law, Gaussian (CGS) units, electrostatic unit, esu.