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(International System of Units)
(modern metric system)

SI indicates the International System of Units, the current well-accepted metric units. The system offers refined definitions for a basic set of units (meter, kilogram, second, kelvin, mole, and candela) and a system of derived units. The most common metric units predate the system and are also in other similar metric-based systems. Some other non-SI units remain in common use, especially for Electromagnetic measurement, such as for Magnetic Flux Density: in addition to the SI unit, the Tesla, a non-SI (CGS) unit, the Gauss, is still in use.


Referenced by:
Gauss (G)
Julian Date (JD)
Jansky (Jy)
Magnetic Flux (B)
Magnetic Flux Density (B)
Solid Angle (Ω)
Stefan-Boltzmann Constant (σ)
Tesla (T)
Time Standard
Terrestrial Time (TT)