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More useful Numerical Prefixes |
|
length | metre | m |
mass | kilogram | kg |
time | second | s |
electric current | ampere | A |
temperature | kelvin | K |
amount of substance | mole | mol |
luminous intensity | candela | cd |
plane angle | radian | rad |
solid angle | steradian | sr |
electric charge | coulomb | C |
electric capacitance | farad | F |
illumination | lux | lx |
luminous flux | lumen | lm |
energy | joule | J |
force | newton | N |
power | watt | W |
pressure | pascal | Pa |
frequency | hertz | Hz |
magnetic flux | weber | Wb |
Magnetic flux density | tesla | T |
electromotive force | volt | V |
current | ampere | I |
resistance | ohm | O |
electric conductance | siemens | S |
inductance | henry | H |
Units shown in green are basic SI units,those in purple are derived units
The term SI comes from the French description - Systeme International d'Unites
Non- SI units still in common use (Mainly in the USA) are the Pounds per Square Inch (PSI) for pressure, BTU for energy and the Footcandles for Illumination.
Note: Find conversion factors for PSI, BTU and Footcandles on the convert page.
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