Alpha 166772 222627463 2008-06-30T09:48:33Z Aesopos 3138216 {{wiktionarypar|alfa|alpha}} '''Alpha''' may refer to: ==The Greek letter alpha== [[Alpha (letter)]], a letter in the [[Greek alphabet]]. '''α''' may be used as the symbol for: *[[Alpha channel]], describing transparency and opacity in [[computer graphics]] *[[Angle of attack]] in aerodynamics *Common-base current gain of a [[transistor]] in electronics *In physics: **[[Alpha particle]], form of particle radiation **[[Angular acceleration]] **[[Fine-structure constant]], a fundamental physical constant **[[H-alpha]], or '''H-α''', an emission line created by hydrogen atoms *The [[alpha carbon]] in organic [[chemistry]] *The significance level in [[statistical hypothesis testing]] *[[Thermal diffusivity]] *[[Coefficient of thermal expansion]] in [[thermodynamics]] *A symbol to denote [[Direct proportion]], in [[mathematics]] *In Astronomy ([[Bayer designation]]): **The brightest [[star]] in a constellation. *The first unit in a [[sequence]]. ==Place names== ;Australia *[[Alpha, Queensland]] ;United States *[[Alpha, Illinois]] *[[Alpha, Michigan]] *[[Alpha, Minnesota]] *[[Alpha, New Jersey]] *[[Alpha, Ohio]] *[[Alpha Ridge, Alaska]] ;Arctic Ocean *[[Alpha Ridge]], an undersea ridge ==Media, literature and fiction== *[[Alpha 5]]/[[Alpha 6]]/[[Alpha 7]], nicknames of the characters in the ''Power Rangers'' television programs *[[Alpha (album)]], an album by the band Asia *[[Alpha (Alice Nine album)]], an album by J-rock/Visual Kei band Alice Nine *[[Alpha (band)]], a British electronic music group *[[Alpha Books]], an imprint of Penguin Group (USA) *[[Alpha (computer)]], a fictional computer in Mike Walker's radio play ''Alpha'' *[[Alpha (DC Comics)]], a character from DC Comics *[[Alpha Legion]], a Chaos Space Marines company from Warhammer 40,000 *[[Alpha Magazine]], Australian men's sport magazine *[[Alpha (Magic: The Gathering)]], the first Magic: The Gathering cards set *[[Alpha (planet)]] in Isaac Asimov's novel ''Foundation and Earth'' *[[Alpha Range]], the leader of 'The C Pack' *[[Alpha (Sevendust album)]], an album by the band Sevendust*[[Alpha the Ultimate Mutant]], a character featured in Marvel Comics *[[Alpha TV]], a Greek terrestrial channel *[[Moonbase Alpha]], the primary setting for the television series ''Space: 1999'' == Science and mathematics == * ALPHA, the [[ALPHA Collaboration|Antihydrogen Laser PHysics Apparatus]], an experiment at [[CERN]]. *[[Alpha (biology)]], "alpha male" and "alpha female", the highest ranking individuals in a community of social animals *[[Alpha (investment)]], a measurement of risk-adjusted performance *[[Alpha waves]], recorded by electroencephalography * Another term for the [[angle of attack]] on an aircraft's wing. *[[Cronbach's alpha]], a statistical measure of reliability == Computing == *Alpha, a [[development stage#Alpha|development stage]] of software *[[Alpha (machine learning)]], the degree to which a learning agent takes into account new information *ALPHA refers to the set of [[ASCII]] characters A-Z and a-z, as defined in RFC 4234 *The [[ALPHA programming language]] *[[AlphaServer]] - DEC now HP machine successor to the VAX *[[AlphaStation]] - DEC now HP workstation successor to the VAX *[[DEC Alpha]], a microprocessor/central processing unit (CPU) ==Other== *[[Alpha 2000]], a light aircraft built in New Zealand *The first letter in the [[NATO phonetic alphabet]] *Service "A", one of the [[uniforms of the United States Marine Corps]] *[[Alpha class submarine]], a Russian fast attack nuclear submarine *[[Alpha (investment)|Alpha coefficient]] in finance, the risk-adjusted return of an investment *[[Alpha course]], an introductory course in Christianity *[[Alpha Group]], a dedicated counter-terrorism unit that belonged to OSNAZ *[[Alpha Industries]], clothing company *[[Alpha (radio navigation)]], a Russian radio navigation system similar to the former Omega Navigation System *[[GM Alpha platform]] *[[Latin alpha]], an open front unrounded vowel *[[Sony α]] or Sony Alpha, a digital SLR series by Sony **[[Minolta Dynax|Minolta α]] or Minolta Alpha, the Japanese name for a series of SLR cameras known as Maxxum or Dynax elsewhere, and predecessor to Sony's brand of the same name *[[Space Station Alpha]], the original name and unofficial call sign for the International Space Station *[[Tropical Storm Alpha (2005)]] ==See also== *[[Alfa]] *[[Beta]] {{disambig}} [[ar:ألفا]] [[bg:Алфа]] [[de:Alpha (Begriffsklärung)]] [[el:Άλφα (αποσαφήνιση)]] [[es:Alpha]] [[fa:آلفا]] [[fr:Alpha (homonymie)]] [[ko:알파]] [[he:אלפא (פירושונים)]] [[nl:Alpha]] [[ja:アルファ]] [[pl:Alpha]] [[pt:Alpha]] [[ru:Альфа (значения)]] [[simple:Alpha]] [[sk:Alpha]] [[sv:Alfa (olika betydelser)]] [[th:แอลฟา (แก้ความกำกวม)]] [[vo:Alpha]] [[zh:Alpha]]