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MISCELLANEOUS INFORMATION International System of Units (SI) The International System of Units (SI for short) is built upon seven base units and two supplementary units. Derived units are related to base and supplementary units by formulas in the right hand column. Symbols for units with specific names are given in parentheses. Quantity Length mass time electric current thermodynamic temperature amount of substance luminous intensity plane angle solid angle acceleration activity (of a radioactive source) angular acceleration angular velocity area density electric capacitance electric conductance electric field strength electric inductance electric potential difference electric resistance electromotive force energy entropy force frequency illuminance luminance luminous flux magnetic field strength magnetic flux magnetic flux density mangetomotive force power pressure quantity of electricity quantity of heat

6.00 536

Unit

Formula

Base Units metre (m) kilogram (kg) second (s) ampere (A) kelvin (K) mole (mol) candela (cd) Supplementary Units radian (rad) steradian (sr)

Derived Units

metre per second squared disintegration per second radian per second squared radian per second square metre kilogram per cubic metre farad (F) stemens (S) volt per metre henry (H) volt (V) ohm (Ω) volt (V) joule (J) joule per Kelvin newton (N) hertz (Hz) lux (lx) candela per square metre lumen (lm) ampere per metre weber (Wb) tesla (T) ampere (A) watt (W) pascal (Pa) coulomb (C) joule (J)

m/s2 (disintegration)/s rad/s2 rad/s m2 kg/m3 A•s/V A/V V/m V•s/A W/A V/A W/A N•m j/K kg•m/s2 (cycle)/s lm/m2 cd/m2 cd•sr A/m V•s Wb/m2 J/s N/m2 A•s N•m