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Talk:SI base unit
here's the table I took out in case eveyone wants it back:
| Physical quantity | Symbol | Name of SI base unit | Symbol for SI unit | Remarks |
|---|---|---|---|---|
| length | <math>l</math> | metre | m | One metre is defined as the distance light travels in a vacuum in 1/299792458 second. This standard was adopted in 1983, when the speed of light in vacuum was defined to be precisely 299792458 m/s. |
| mass | <math>m</math> | kilogram | kg | One kilogram is defined to be the mass of a specific cylinder of platinum-iridium alloy, kept at the International Bureau of Weights and Measures (near Paris). |
| time | <math>t</math> | second | s | One second is defined as the time required for 9192631770 cycles of a hyperfine transition[?] in cesium 133. This definition was adopted in 1967. |
| electric current | <math>I</math> | ampere | A | |
| thermodynamic temperature | <math>T</math> | kelvin | K | |
| amount of substance | <math>n</math> | mole | mol | |
| luminous intensity | <math>I_v</math> | candela | cd |
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