Geographical mile

From Biocrawler, the free encyclopedia.

The geographical mile is a unit of length determined by 1 minute of arc along the Earth's equator, approximately equal to 1855 metres (6087.15 international feet).

The unit is not used much; it is closely related to the nautical mile, which was originally determined as 1 minute of arc along a great circle of the Earth and is nowadays defined to be exactly 1852 metres.

The Danish and German geographical mile (mil and Meile) is 4 minutes of arc, and was defined as 7421.5 metres by the astronomer Ole Rømer of Denmark. In Norway and Sweden, this geographical mile was only used at sea.

See also

• Medieval weights and measures for details of the geographical league of France
• conversion of units for details of mile for the various other miles in use

Wikipedia (http://en.wikipedia.org/wiki/Main_Page) Geographical_mile (http://en.wikipedia.org/wiki/Geographical_mile) version history (http://en.wikipedia.org/w/index.php?title=Geographical_mile&action=history) GNU Free Documentation Lizenz (http://en.wikipedia.org/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License) CC-by-sa (http://creativecommons.org/licenses/by-sa/2.5/)

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