Geographical mile: Difference between revisions
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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 (6076.1 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 (6076.1 feet). | ||
The [[Germany|German]] '''geograpical mile''' (''Meile'') is 4 minutes of arc, and was defined as 7421.5 meters | The [[Germany|German]] '''geograpical mile''' (''Meile'') is 4 minutes of arc, and was defined as 7421.5 meters by the astronomer [[Ole Rømer]] of [[Denmark]]. See [[historical weights and measures]]. | ||
See [[mile]] for the various other miles in use, and also [[conversion of units]]. | See [[mile]] for the various other miles in use, and also [[conversion of units]]. | ||
Revision as of 13:33, 18 February 2003
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 (6076.1 feet).
The German geograpical mile (Meile) is 4 minutes of arc, and was defined as 7421.5 meters by the astronomer Ole Rømer of Denmark. See historical weights and measures.
See mile for the various other miles in use, and also conversion of units.