Phase 217578 220615519 2008-06-20T18:44:44Z Peter439 1269895 +phase transition {{wiktionary}} {{TOCright}} A '''phase''' is one point or portion in a recurring series of changes. '''Phase''' or '''phases''' may also refer to: ===In science and engineering=== * [[Phase (matter)]], a physically distinctive form of a substance, such as the solid, liquid, and gaseous states of ordinary matter * [[Phase transition]] is the transformation of a thermodynamic system from one phase to another * The initial condition of a cyclic phenomenon **[[Phase (waves)]], initial angle of a sinusoid function at its origin **[[Continuous Fourier transform]], angle of a complex coefficient representing the phase of one sinusoidal component * The current (time varying) state of a cyclic phenomenon **[[Lunar phase]], the appearance of the Moon as viewed from the Earth **[[Planetary phase]], the appearance of the illuminated section of a planet **[[Instantaneous phase]], generalization for both cyclic and non-cyclic phenomena * [[Phase factor]], a complex scalar in the context of quantum mechanics * [[Polyphase system]], a means of distributing alternating current electric power in multiple conducting wires with definite phase offsets **[[Single-phase electric power]] **[[Three-phase electric power]] Basics of three-phase electric power **[[Three-phase]] Mathematics of three-phase electric power * In biology, a part of the [[cell cycle]] in which cells divide and reproduce *[[Phaser (effect)]], an audio effect. *[[Archaeological phase]], a discrete period of occupation at an [[archaeological site]]. ===In fiction=== * [[Phases (Buffy episode)|"Phases" (''Buffy'' episode)]], an episode of the TV series ''Buffy the Vampire Slayer'' * [[Phases (.hack)]], fictional boss monsters from the .hack franchise * Phase, an incarnation of the DC Comics character usually known as [[Phantom Girl]] * [[Phase IV]], a 1974 science fiction movie directed by Saul Bass ===Other=== * [[Phase (syntax)]], a syntactic domain hypothesized by Noam Chomsky * [[Phase 10]], a card game created by Fundex Games * [[Phase (game)]], a music game for the iPod developed by Harmonix Music Systems ===See also=== *[[Faze]] *[[Phaser]] *[[Phasor]] *[[FASOR]] {{disambig}} [[ca:Fase]] [[cs:Fáze]] [[da:Fase]] [[de:Phase]] [[es:Fase]] [[fr:Phase]] [[gl:Fase]] [[id:Fase]] [[it:Fase]] [[lv:Fāze]] [[nl:Fase]] [[ja:フェーズ]] [[no:Fase]] [[nds:Phaas]] [[pl:Faza]] [[pt:Fase (desambiguação)]] [[ru:Фаза]] [[sk:Fáza]] [[sl:Faza]] [[sr:Фаза]] [[su:Fase]] [[sv:Fas]] [[vi:Pha (định hướng)]] [[uk:Фаза]] [[zh:態]]