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Non-SI Units

Derived CGS Units with Special Names

Physical quantityUnit nameUnit symbolExpression in SI units
energyergerg10-7 J
forcedynedyn10-5 N
dynamic viscositypoisePdyn s cm-2 = 0.1 Pa s
kinematic viscositystokesSt cm2 s-1 = 10-4 m2 s-1
magnetic inductiongaussG10-4 T
magnetic field strengthoerstedOe(1000/4π) A m-1
magnetic fluxmaxwellMx10-8 Wb
luminancestilbsb cd cm-2 = 104 cd m-2
illuminationphotph104 lx
acceleration
(due to gravity)
galGal 1 cm s-2 = 10-2 m s-2
Table 8. Derived CGS Units with Special Names.

Some non-SI units are still occasionally used. Some are important for the interpretation of older scientific texts, but their use is not encouraged. The above table shows the relationship between CGS units and the SI, and lists those CGS units that were assigned special names. In the field of mechanics, the CGS system of units was built upon three quantities and the corresponding base units: the centimetre, the gram and the second. In the field of electricity and magnetism, units were expressed in terms of these three base units. Because this can be done in different ways, it led to the establishment of several different systems, for example, the CGS Electrostatic System, the CGS Electromagnetic System and the CGS Gaussian System. In these three last-mentioned systems, the system of quantities and the corresponding system of equations differ from those used with SI units.

Si Units:
SI Base Units
SI Derived Units
expressed with special names
expressed in terms of SI base units
expressed in terms in terms of SI units with special names
SI Unit Prefixes
Non-SI Units
accepted by SI
currently accepted by SI
derived CGS units with special names
other non-SI units
Constants
Glossary of Units



CONVERSION CALCULATORS

Convert between Different Units of Measurement

Index of Unit Converters
ACCELERATION
ANGLE
AREA
AREA
DENSITY
DENSITY
DISTANCE
DYNAMIC
VISCOSITY
ENERGY
ENERGY
DENSITY
ENTROPY
FEED RATE
FLOW RATE
FORCE
FUEL
CONSUMPTION
HEAT
CAPACITY
HEAT FLUX
DENSITY
HEAT TRANSFER
COEFFICIENT
IRRADIANCE
KINEMATIC
VISCOSITY
LENGTH
MASS
POWER
PRESSURE
SPECIFIC
ENERGY
SPECIFIC
ENTHALPY
SPECIFIC
ENTROPY
SPECIFIC HEAT
CAPACITY
SPECIFIC
VOLUME
SPEED
TEMPERATURE
THERMAL
CONDUCTIVITY
TIME
TORQUE
VELOCITY
VOLUME
VOLUMETRIC
HEAT CAPACITY
Unit Prefixes
Plasma
Gas Flow
Hardness
MPa - GPa
Computing
Bits and Bytes

To use the measurement conversion calculators simply enter a number value into the desired field and click calculate. All results shown will be equivalent values. Values are given to seven significant figures ( the odd result may show 9's or 0's over running). Values of 10 000 or greater will be displayed in the e-format e.g. 2.3456e7 which equals 2.3456 x 107 or 23 456 000. Values lower than 0.001 will be displayed in the e-format e.g. 2.3456e-5 which equals 2.3456 x 10-5 or 0.000 023456. The calculators require that your browser has java script enabled. View all measurement unit conversion calculators on the same page (may not work with all browsers; requires Iframe).



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