The use of elementary charge as a unit was promoted by George Johnstone Stoney in 1874 for the first system of natural units, called Stoney units.
elementary school | Charge of the Light Brigade | chargé d'affaires | Elementary | Charge-coupled device | Sandy Hook Elementary School shooting | elementary | Chargé d'affaires | charge | Elementary (TV series) | Elementary School | Elementary and Secondary Education Act | electric charge | charge-coupled device | priest in charge | Pickett's Charge | Officer in Charge | Non-Commissioned Officer in Charge | London Central Elementary High School | Elementary school | Community Charge | color charge | Charge & Go! / Lights | Chargé d'Affaires | Bradfield Elementary School | Serious Charge | Hyer Elementary School | Gleneagles Ch'axáý Elementary School | Elementary algebra | Charles in Charge |
Paul Davies and collaborators have suggested that it is in principle possible to disentangle which of the dimensionful constants (the elementary charge, Planck's constant, and the speed of light) of which the fine-structure constant is composed is responsible for the variation.
Zq, the Molecular Hamiltonian charge of a nucleus: atomic number Z * q (electrons' negative elementary charge)