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Length is a measure of distance. In the International System of Quantities, length is a quantity with dimension distance. In most systems of measurement a base unit for length is chosen, from which all other units are derived.
- Unit of length - Wikipedia
A unit of length refers to any arbitrarily chosen and...
- Length measurement - Wikipedia
Length measurement, distance measurement, or range...
- Unit of length - Simple English Wikipedia, the free encyclopedia
A unit of length is a way of measuring length or distance....
- Length - Simple English Wikipedia, the free encyclopedia
The Simple English Wiktionary has a definition for: length....
- Unit of length - Wikipedia
Beginning. Description. Unit names. Prefixes. How big. Length. Mass. British and American spelling. Administering the metric system. The Metre Convention. History. French Revolution. First attempt to metricate France. France Stopping Using The Metric System. Second attempt to metricate France. Wider adoption of the metric system. United States.
The metre (or meter in US spelling; symbol: m) is the base unit of length in the International System of Units (SI). Since 2019, the metre has been defined as the length of the path travelled by light in vacuum during a time interval of 1 299 792 458 of a second, where the second is defined by a hyperfine transition frequency of caesium. [2]