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Encyclopedia > Mi²

A mile is any of several units of distance, or, in physics terminology, of length. Today, one mile is mainly equal to about 1609 m on land and 1852 m at sea and in the air, but see below for the details. The abbreviation for mile is 'mi'. The word unit means any of several things: The natural or usual or smallest measure of something, of which there are multiples and of which there may be fractions. ... personal space, proxemics. ... In general English usage, length (symbols: l, L) is but one particular instance of distance – an objects length is how long the object is – but in the physical sciences and engineering, the word length is in some contexts used synonymously with distance. Height is vertical distance; width (or breadth... The metre, symbol: m, is the basic unit of distance (or of length, in the parlance of the physical sciences) in the International System of Units. ...

Contents

Current definitions

The meanings of mile that are commonly used today are:

  • The statute mile, or more specifically
    • The international mile is the one typically meant when the word mile is used without qualification. It is defined to be precisely 1760 international yards (by definition, 0.9144 meter each); it is therefore exactly 1609.344 meters. It is used in the United States and the United Kingdom as part of the Imperial system of units. The international mile is equivalent to 8 furlongs, or 80 chains, or 5280 international feet.
    • The U.S. survey mile is precisely equal to 5280 U.S. survey feet or 6336/3937 kilometers or, approximately 1609.347 meters. One international mile is precisely equal to 0.999 998 survey mile. The survey mile is used by the United States Public Land Survey System.
  • The international nautical mile is defined to be exactly 1852 meters. It is used universally for aviation, naval and maritime purposes and originated from the geographical mile.
  • In Norway and Sweden, a distance of 10 kilometers is most commonly referred to as a mile, see mil.

This article is about the unit of measure known as the yard. ... The Imperial units are an irregularly standardized system of units that have been used in the United Kingdom and its former colonies, including the United States and Commonwealth countries. ... The 5 furlong post on Epsom Downs A furlong is a measure of distance within Imperial units and U.S. customary units. ... As a unit of measurement within the Imperial system, the chain is defined as 22 yards, 66 feet, or 4 rods. ... A foot (plural: feet) is a non-SI unit of distance or length, measuring around a third of a metre. ... A kilometre (American spelling: kilometer, symbol: km) is a unit of length equal to 1000 metres (from the Greek words khilia = thousand and metro = count/measure). ... This General Land Office map shows the theoretical sectioning of a standard survey township. ... A nautical mile is a unit of distance, or length, as physical scientists like to call it. ... The geographical mile is a unit of length determined by 1 minute of arc along the Earths equator, approximately equal to 1855 metres (6087. ... Mil can refer to a number of different things. ...

History

Throughout history many units of length named mile have been used, with widely differing definitions, originating with the Roman mile of approximately 1479 meters. A Roman mile consisted of 1000 "double steps", or two strides by a Roman soldier. The Latin term for each such double stride is a passus having a length of 5 Roman feet or approximately 4.83 English feet. The word mile itself has been derived from the words mille passus (plural milia passuum), a thousand paces. Along the roads built by the Romans throughout Europe, it was common to erect a stone every mile to announce the distance to Rome, the so-called milestones. The noun milliarium (plural milliaria), designating a milestone, was also used as a figurative alternative for mile. Ancient Rome was a civilization that existed in Europe, North Africa, and the Middle East between 753 BC and its downfall in AD 476. ... World map showing location of Europe A satellite composite image of Europe Europe is geologically and geographically a peninsula, forming the westernmost part of Eurasia. ...


In navigation, the geographical mile was commonly used, defined as 1 minute of arc along the Earth's equator, approximately equal to 1855 meters. The geographical mile is a unit of length determined by 1 minute of arc along the Earths equator, approximately equal to 1855 metres (6087. ... A minute of arc, arcminute, or MOA is a unit of angular measurement, equal to one sixtieth (1/60) of one degree. ... Earth, also known as the Earth or Terra, is the third planet outward from the Sun. ... The equator is an imaginary line drawn around a planet, halfway between the poles. ...


The name statute mile goes back to Queen Elizabeth I of England who redefined the mile from 5000 feet to 8 furlongs (5280 feet) by statute in 1593. Elizabeth I (7 September 1533 – 24 March 1603) was Queen of England and Queen of Ireland from 17 November 1558 until her death. ... The 5 furlong post on Epsom Downs A furlong is a measure of distance within Imperial units and U.S. customary units. ... Events May 18 - Playwright Thomas Kyds accusations of heresy lead to an arrest warrant for Christopher Marlowe. ...


When the international mile became legal in mid-1959, the survey mile was retained for measurements derived from U.S. cadastral surveys. 1959 was a common year starting on Thursday of the Gregorian calendar. ... Cadastral is a term used in surveying and public administration, and refers to the division of land into units for surveying, taxation or administrative purposes. ...


In Denmark and most of Germany the mile in the 19th century was an approximately 7.5 km geographical mile (determined by 4 minutes of arc) specified by Ole Rømer. In parts of Germany there also existed an exact 7.5 kilometer metric mile variant, but it mostly went out of use at the beginning of the 20th century. The Ole Rømer mile was for a long time used as a sea mile in Scandinavia, but was in the middle of the 20th century replaced by the international nautical mile (which corresponds to 1 minute of arc). The international nautical mile is still often referred to by traditionalist Scandinavians as a quarter mile. In Norway and Sweden, a mile in daily speech refers to a traditional unit that is still very commonly used, but now defined as 10 kilometers, see mil. Alternative meaning: Nineteenth Century (periodical) (18th century — 19th century — 20th century — more centuries) As a means of recording the passage of time, the 19th century was that century which lasted from 1801-1900 in the sense of the Gregorian calendar. ... Ole Rømer. ... (19th century - 20th century - 21st century - more centuries) Decades: 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s As a means of recording the passage of time, the 20th century was that century which lasted from 1901–2000 in the sense of the Gregorian calendar (1900–1999 in the... Scandinavia, Fennoscandia, and the Kola Peninsula. ... A nautical mile is a unit of distance, or length, as physical scientists like to call it. ... Mil can refer to a number of different things. ...


In Ireland the Irish mile of 2240 yards (about 2048.3 meters) was used legally until 1826, and by some reports survived until the conversion to the meter as the unit measurement for distance, in early January 2005. This article is about the unit of measure known as the yard. ...


Others miles are:

Russian verst
1066.8 m (exactly 3500 feet = ca. 1168 yards) of 500 sazhen
Scotch mile
1814.2 m (1984 yards) of 320 falls
Austrian Meile
7585.9 m (8296 yards) of 240 Ruten (rods) or 400 Klafter (fathoms)

See also

League is a unit of distance long common in Europe and Latin America, although no longer an official unit in any nation. ... The Imperial units are an irregularly standardized system of units that have been used in the United Kingdom and its former colonies, including the United States and Commonwealth countries. ... The U.S. customary units, commonly known in the United States as English units or standard units, are the non-metric units of measurement that are currently used in the U.S., in some cases alongside the metric system of units. ... Introduction Many systems of weights and measures have existed throughout history in different civilisations. ... The following systems arose from earlier systems, and in many cases utilize parts of much older systems. ... In mathematics, the Fibonacci numbers form a sequence defined recursively by: In words: you start with 0 and 1, and then produce the next Fibonacci number by adding the two previous Fibonacci numbers. ... Photograph of the Curry Mile at nighttime The Curry Mile is a nickname for the main high street of Rusholme in Manchester, part of the larger Wilmslow Road. ...

External links

  • NIST General Tables of Units of Measurement (http://ts.nist.gov/ts/htdocs/230/235/appxc/appxc.htm)

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