Ø

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Øø

The "Ø" (minuscule: "ø"), is a vowel and a letter used in the Danish, Faroese and Norwegian languages.

Contents

Usage

  • The name of this letter is the same as the sound it represents. Speakers of languages which use the letter ø hold that it is not a ligature or a diacritical variant of the letter o (That is, emically they perceive it as a different letter entirely). Though not its native name, among English-speaking typographers the symbol may be called a "slashed o" or "o with stroke".

In languages

History

There are two theories about the origin of the letter ø:

  • That it arose as a version of the ligature Œ for a diphthong spelled "oe", with the horizontal line of the "e" written across the "o".
  • That it arose in Anglo-Saxon England as an O and an I written in the same place, to represent a long close [ö] sound resulting from i-mutation of [ō]: compare Bede's Northumbrian Anglo-Saxon period spelling Coinualch for standard Cēnwealh (a man's name) (in a text in Latin). Later the letter ø disappeared from Anglo-Saxon as the Anglo-Saxon sound [ø] changed to [ē], but by then use of the letter ø had spread from England to Scandinavia.

On computers

Danish keyboard with keys for Æ, Ø and Å. On Norwegian keyboards the Æ and Ø trade places.
  • For computers, when using the ISO 8859-1 or Unicode sets, the codes for 'Ø' and 'ø' are respectively 216 and 248, or in hexadecimal D8 and F8.
  • In the TeX typesetting system, the letter is produced by \o
  • On a Mac operating system using a US English-language keyboard, the letter can be typed by holding the [Option] key while typing O, or o, to yield Ø, or ø.
  • On Microsoft Windows, using the "United States-International" keyboard setting, it can be typed by holding down the Alt-Gr key and pressing "L". It can also be typed under any keyboard setting by holding down the [Alt] key while typing 0216 or 0248 on the numeric keypad, provided the system uses code page 1252 as system default.
  • The Unicode letter name is "Latin capital/small letter O with stroke".
  • In HTML character entity references, needed in cases where the letter is not available by ordinary coding, the codes are Ø and ø.
  • In the X Window System environment, one can produce these characters by pressing Alt-Gr and o or O, or by pressing the Multi key followed with a slash and then o or O.
  • In some systems, such as older versions of MS-DOS, the letter Ø is not part of the default codepage. In Scandinavian codepages, Ø replaces the yen sign (¥) at 165, and ø replaces the ¢ sign at 162.

Mathematics

  • The letter "Ø" is sometimes used in mathematics as a replacement for the symbol "∅" (Unicode character U+2205), referring to the empty set as established by Bourbaki. The "∅" symbol is always drawn as a slashed circle, whereas in most typefaces the letter "Ø" is a slashed ellipse. Virtually identical is the diameter sign (Unicode character U+2300).

Music

Other uses

The fallen Astivus is marked as dead in the Gladiator Mosaic.
  • In engineering drawings, the symbol ⌀ (closely resembling Ø) preceding a dimension indicates a diameter.
  • In electrical and electronic engineering, the symbol Φ (Greek letter Phi) , which closely resembles Ø, is called "phase" and designates a phase of alternating current. E.g. - AΦ, BΦ, and CΦ in three phase power or signal circuitry.
  • In photography, the symbol ⌀ (closely resembling Ø) represents the lens diameter, i.e. a lens with a diameter of 82mm would be written on the lens as: ø 82mm
  • As an abbreviation for Enhedslisten, a Danish political party
  • The letter ∅ with two brackets symbolizing a double no set was used as the gang symbol for the Lords of Chaos, a self-styled teen militia. Ex. ( Ø )
  • In linguistics, a zero element (i.e. a grammatical element represented by the absence of a word) is represented by ∅, such as the difference in English between the articles "the", "a", "an", and instances where nouns are not preceded by articles, represented by ∅.
  • In Indonesian car number plates, the symbol ∅ (closely resembling Ø) is placed behind number of registration to distinguish it from number 0. For example: B 2031 ∅T, which is registered in Jakarta.
  • The ø is used as the o in "The Wørd", a regular segment on The Colbert Report.
  • A similar symbol was used to mark the name of a gladiator who died in combat in Roman mosaics representing fights.
  • In phpMyAdmin the ø is used to substitute the "mean" or "average"
  • In Audio Engineering the ø is used to represent a signal whose polarity (sometimes called phase) has been reversed.
  • Many scholars in biological and human sciences use Mø as shorthand notation for "macrophage." Whether this was a parallel invention to, or corruption of MΦ ("phi" for "phage"), is unclear.

Footnotes

  1. ^ Faqs.org. Danish and Norwegian alphabet contains a recording of a person reciting the Danish alphabet.

References

See also

The ISO basic Latin alphabet
Aa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn Oo Pp Qq Rr Ss Tt Uu Vv Ww Xx Yy Zz
Letter O with diacritics
Letters using stroke sign

history palaeography derivations diacritics punctuation numerals Unicode list of letters

Wikipedia content modification information:

  • This page was last modified on 18 December 2008, at 15:23.

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