Template talk:SI special units
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[edit] Standard order
I changed the representation of the base units to conform with NIST recommendations, so that dimensions are always represented in a cannonical form in standard order, as follows:
mα · kgβ · sγ · Aδ · Kε · molζ · cdη
Obviously, if any of the dimensional exponents (α, β, γ, ...) are zero, the dimension is simply the number 1, and is omitted.
--Jeepien 04:24:35, 2005-08-22 (UTC)
[edit] Removed from SI derived units
I have removed the following section from SI derived units and replaced it (in part) with this template. However, this involved a slight loss of information. I suggest the lost info be added to this template. Jimp 14Oct05
[edit] Units with special names and symbols
| Physical quantity | Name of SI unit | Symbol | Expression in terms of other units |
Expression in terms of SI base units |
|
|---|---|---|---|---|---|
| plane angle | radian | rad | 1 | m·m-1 | |
| solid angle | steradian | sr | 1 | m2·m-2 | |
| frequency | hertz | Hz | s-1 | ||
| force, weight | newton | N | kg·m·s-2 | ||
| pressure, stress | pascal | Pa | N·m-2 | kg·m-1·s-2 | |
| energy, work, heat | joule | J | N·m | kg·m2·s-2 | |
| power, radiant flux | watt | W | J·s-1 | kg·m2·s-3 | |
| electric charge | coulomb | C | A·s | ||
| electric potential, electromotive force | volt | V | J·C-1 | kg·m2·s-3·A-1 | |
| electric capacitance | farad | F | C·V-1 | kg-1·m-2·s4·A2 | |
| electrical resistance, impedance, reactance | ohm | Ω | V·A-1 | kg·m2·s-3·A-2 | |
| electric conductance | siemens | S | A·V-1 | kg-1·m-2·s3·A2 | |
| magnetic flux | weber | Wb | V·s | kg·m2·s-2·A-1 | |
| magnetic flux density, magnetic inductivity | tesla | T | V·s·m-2 | kg·s-2·A-1 | |
| inductance | henry | H | V·s·A-1 | kg·m2·s-2·A-2 | |
| temperature | degree Celsius | °C | 1 °C = 1 K, t°C = tK - 273.15 | ||
| luminous flux | lumen | lm | cd·sr | cd | |
| illuminance | lux | lx | cd·sr·m-2 | cd·m-2 | |
| activity (radioactive) | becquerel | Bq | s-1 | ||
| absorbed dose (of radiation) | gray | Gy | J·kg-1 | m2·s-2 | |
| dose equivalent (dose equivalent index) | sievert | Sv | Gy | m2·s-2 | |
| catalytic activity | katal | kat | mol·s-1 | ||
