Karl Jones: /* External links */

2016-04-26T03:52:57Z

‎External links

Karl Jones: /* See also */

2016-02-28T15:16:59Z

‎See also

Karl Jones: Created page with "'''Phi''' (uppercase Φ; Ancient Greek: ϕεῖ, ''pheî'', [pʰé͜e]; modern Greek: φι, fi, [fi]; English: /faɪ/) is the 21st letter of the Greek alphabet. == Descriptio..."

2016-02-28T15:16:46Z

Created page with "'''Phi''' (uppercase Φ; Ancient Greek: ϕεῖ, ''pheî'', [pʰé͜e]; modern Greek: φι, fi, [fi]; English: /faɪ/) is the 21st letter of the Greek alphabet. == Descriptio..."

New page

'''Phi''' (uppercase Φ; Ancient Greek: ϕεῖ, ''pheî'', [pʰé͜e]; modern Greek: φι, fi, [fi]; English: /faɪ/) is the 21st letter of the Greek alphabet.

== Description ==

In [[Ancient Greek]], it represented an aspirated voiceless bilabial plosive ([pʰ]), which was the origin of its usual romanization as "ph".

In modern Greek, it represents a voiceless labiodental fricative ([f]) and is correspondingly romanized as "f".

Its origin is uncertain but it may be that phi originated as the letter qoppa and initially represented the sound /kʷʰ/ before shifting to Classical Greek [pʰ].

In traditional Greek numerals, phi has a value of 500 (φʹ) or 500 000 (͵φ).

== Cyrillic ==

The Cyrillic letter Ef (Ф, ф) descends from phi.

== Golden ratio ==

Phi is also used as a symbol for the [[golden ratio]] and on other occasions in [[mathematics]] and [[science]].

This use is separately encoded as the [[Unicode]] glyph ϕ.

The modern Greek pronunciation of the letter is sometimes encountered in English (as /fiː/) when the letter is being used in this sense.

== See also ==

* [[Alphabet]]
* [[Golden ratio]]
* [[https://en.wikipedia.org/wiki/Phi_phenomenon Phi phenomenon]]

== External links ==

* [https://en.wikipedia.org/wiki/Phi Phi] @ Wikipedia

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 * [[Alphabet]]
 * [[Golden ratio]]
-* [[https://en.wikipedia.org/wiki/Phi_phenomenon Phi phenomenon]]
+* [[Phi phenomenon]]
 ==  External links ==
 * [https://en.wikipedia.org/wiki/Phi Phi] @ Wikipedia

Phi - Revision history

Karl Jones: /* External links */

Karl Jones: /* See also */

Karl Jones: Created page with "'''Phi''' (uppercase Φ; Ancient Greek: ϕεῖ, ''pheî'', [pʰé͜e]; modern Greek: φι, fi, [fi]; English: /faɪ/) is the 21st letter of the Greek alphabet. == Descriptio..."