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BASIC & DERIVED SI UNITS



BASIC UNITS
DIMENSION				UNIT			SYMBOL
Length					meter			m
Mass					kilogram		kg
Time					second			s
Electric current			ampere			A
Temperature, thermodynamic		kelvin			K
Amount of matter			mole			mol
Angle					radian			rad
Solid angle				steradian		sr
Luminous intensity			candela			cd

SOME DERIVED SI UNITS
QUANTITY			UNITS				SYMBOL		BASIC UNITS
Area				square meter 					m2
Volume				cubic meter					m3
Frequency			Hertz, cycles per second	Hz		1/s
Density				kilogram per cubic meter			kg/m3
Velocity			meter/sec					m/s
Angular velocity		radian/sec					rad/s
Acceleration			meter/second squared				m/s2
Angular acceleration		radians per second square			rad/s2
Volumetric flow rate		cubic meter per second				m3/s
Mass flow rate			kg per second					kg/s
Force				Newton				N		kg-m/s2
Surface Tension			Newton per meter		N/m		kg/s2
Pressure, stress		Pascal (Newton per square meter) Pa (N/m2)	kg/m-s2
Dynamic viscosity		Newton-second per square meter	N-s/m2		kg/m-s2
Kinematic viscosity		meter squared per second			m2/s
Work, energy			joule, newton-meter, watt-second J, N-m, W-s	kg-m2/s2
Power				watt, joule per second		W, J/s		kg-m2/s3
Specific heat, gas constant	joule per kilogram degree	J/kg-K		m2/s2-K
Enthalpy			joule per kilogram		J/kg		m2/s2
Entropy				joule per kilogram degree	J/kg-K		m2/s2-K
Thermal conductivity		watt per meter degree		W/m-K		kg-m/s3-K
Diffusion coefficient		meter squared per second			m2/s
Electrical charge		coulomb				C		A-s
Electromotive force		volt				V		kg-m2/A-s3
Electric field strength		volt per meter			V/m		kg-m/A-s3
Electric resistance		ohm				ohm		kg-m2/A2-s3
Electric Conductivity		amperes per volt meter		A/V-m		A2-s3/kg-m3
Electric capacitance		farad				F		A2-s4/kg-m2
magnetic flux			Weber				Wb		kg-m2/s2-A
Inductance			henry				H		kg-m2/s2-A2
Magnetic flux density		tesla				T		kg/s2-A

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Compiled by Nahum Gat, Ph.D. Comments and corrections will be appreciated. Please address correspondence to nahum@oksi.com