# Meter

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'''[[Metre]]''' (or '''[[meter]]'''), symbol '''[[m]]''', is the base unit of length in the International System of Units (SI). Originally intended to be one ten-millionth of the distance from the Earth's equator to the '''[[North Pole]]''', its definition of has been periodically refined to reflect growing knowledge of '''[[metrology]]'''. Since 1983, it is defined as the distance travelled by light in a complete vacuum in '''1⁄299,792,458''' of a '''[[second]]'''. | '''[[Metre]]''' (or '''[[meter]]'''), symbol '''[[m]]''', is the base unit of length in the International System of Units (SI). Originally intended to be one ten-millionth of the distance from the Earth's equator to the '''[[North Pole]]''', its definition of has been periodically refined to reflect growing knowledge of '''[[metrology]]'''. Since 1983, it is defined as the distance travelled by light in a complete vacuum in '''1⁄299,792,458''' of a '''[[second]]'''. | ||

- | |||

- | SI multiples | ||

- | |symbol=m | ||

- | |unit=metre | ||

- | |note=Common prefixed units are in '''bold''' face. | ||

- | |n=|mc=|m=|c=|k= | ||

- | |xd=[[decimetre]] | ||

- | |xc=[[centimetre]] | ||

- | |xmc=[[micrometre]] | ||

- | |xf=femtometre | ||

- | |xm=[[millimetre]] | ||

- | |xn=[[nanometre]] | ||

- | |xp=[[picometre]] | ||

- | |xda=[[decametre]] | ||

- | |xh=[[hectometre]] | ||

- | |xk=[[kilometre]] | ||

- | |xM=[[megametre]] | ||

- | |xG=[[gigametre]] | ||

## Revision as of 17:45, 6 June 2010

**Metre** (or ** meter**), symbol

**m**, is the base unit of length in the International System of Units (SI). Originally intended to be one ten-millionth of the distance from the Earth's equator to the

**North Pole**, its definition of has been periodically refined to reflect growing knowledge of

**metrology**. Since 1983, it is defined as the distance travelled by light in a complete vacuum in

**1⁄299,792,458**of a

**second**.

Reference *Meter* [1]