ElementaryCharge is a natural constant and implemented as a UniqueConstant. Its value
[Cohen/Cvitas/etal_2007] (p.111) is an experimental value. The numerical value is

C. As such, it is a ElectricCharge.
The constant should be used as a macro ELEMENTARYCHARGE:
ElementaryCharge is a Loki::Singleton, defined in namespace
elementaryCharge
. The ElementaryCharge is a derived
quantity with electricCharge::Quantity as the base
quantity, and does incorporate all features of an
electric charge.
[Cohen/Cvitas/etal_2007] E.R. Cohen, T. Cvitas, J.G. Frey, B. Holmström, K. Kuchitsu, R. Marquardt, I. Mills, F. Pavese, M. Quack, J. Stohner, H.L. Strauss, M. Takami, and A.J. Thor, Quantities, Units and Symbols in Physical Chemistry, 3rd ed., Blackwell Science, Oxford, 2007.
back to Physical Quantities start page