International System of Units

Base quantity Symbol for quantity Symbol for dimension length l, x, r, etc. L mass m M time, duration t T electric current I, i I thermodynamic temperature T Θ amount of substance n N luminous intensity Iv J Table 1. SI base units Base quantity SI base... More

Base quantity Symbol for quantity Symbol for dimension length l, x, r, etc. L mass m M time, duration t T electric current I, i I thermodynamic temperature T Θ amount of substance n N luminous intensity Iv J Table 1. SI base units Base quantity SI base unit ________________________________ ____________________________ Name Symbol Name Symbol length l, x, r, etc. meter m mass m kilogram kg time, duration t second s electric current I, i ampere A thermodynamic temperature T kelvin K amount of substance n mole mol luminous intensity Iv candela cd Table 2. Examples of coherent derived units in the SI expressed in terms of base units Derived quantity SI coherent derived unit __________________________________ ______________________________________ Name Symbol Name Symbol area A square meter m2 volume V cubic meter m3 speed, velocity v meter per second m/s acceleration a meter per second squared m/s2 wavenumber σ, ν ~ reciprocal meter m−1 density, mass density ρ kilogram per cubic meter kg/m Less