Main scale, and the way the Additional System International / SI - Physics

International system is a system that was developed from the metric system the amount of french inaugurated in 1960. Has a principal amount while the amount of extra dimensions do not have the dimensions.

A. Seven (7) the amount of principal according to the International System / SI is:
1. The amount of principal meters long with the first symbol m
2. The amount of principal Kelvin temperature first with the symbol K
3. The amount of principal first time seconds / second with a symbol
4. Principal amount of electric current ampere with the first long a symbol
5. The amount of principal kilogram mass with the first symbol kg
6. Principal amount of light intensity first Candela / kandela with the symbol cd
7. The amount of principal amount of oxygen Mole with the first symbol mol

B. Two (2) the amount of additional appropriate System International / SI, namely:
1. The amount of additional flat corner unit with Radian symbol rad
2. The amount of additional space corner unit with the symbol sr steradian