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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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