Alpha

Look up alfa or alpha in Wiktionary, the free dictionary.

Alpha may refer to:

Letter

• Alpha (letter), the first letter of the Greek alphabet

May be used as the symbol for

• Alpha compositing, describing transparency and opacity in computer graphics
• Angle of attack in aerodynamics
• Common-base current gain of a transistor in electronics
• 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, the Bayer designation, the brightest star in a constellation
• The first unit in a sequence
• In mathematics: one of the Feigenbaum constants describing bifurcation diagram

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

Place names

Australia

• Alpha, Queensland

United States

• Alpha, California
• Alpha, Illinois
• Alpha, Kentucky
• Alpha, Michigan
• Alpha, Minnesota
• Alpha, New Jersey
• Alpha, Ohio
• Alpha, Tennessee
• Alpha, Wisconsin
• Alpha Ridge, Alaska

Arctic Ocean

• Alpha Ridge, an undersea ridge

Media, literature and fiction

Television

• Alpha TV, a Greek terrestrial channel
• The Alpha Quadrant, one of the four Galactic Quadrants in the fictional Star Trek universe

Music

• Alpha (Asia album)
• Alpha (Alice Nine album), by the band Alice Nine
• Alpha (band), a British electronic music group
• Alpha (Sevendust album), by the band Sevendust
• Alpha (Selena album)
• Alpha, one of the tracks on the album Albedo 0.39, composed by Vangelis
• ALPHA 60, a Swedish alternative rock band

Books and magazines

• Alpha Books, an imprint of Penguin Group (USA)
• Alpha Magazine, Australian men's sport magazine
• Alpha Knightmare Frame, used by the "Irregulars" in the manga version of Code Geass

Gaming

• Alpha (Magic: The Gathering), the first Magic: The Gathering cards set
• Alpha (video game), a 1986 interactive fiction game by Square
• AlphaDream‎, a second-party video game developer for Nintendo

Fictional characters and places

• Alpha 5/Alpha 6/Alpha 7, nicknames of the characters in the Power Rangers television programs
• Alpha (computer), a fictional computer in Mike Walker's radio play Alpha
• Alpha (comics), a character from DC Comics
• Alpha Legion, a Chaos Space Marines Legion from Warhammer 40,000
• Alpha (planet) in Isaac Asimov's novel Foundation and Earth
• Alpha the Ultimate Mutant, a character featured in Marvel Comics
• Moonbase Alpha, the primary setting for the television series Space: 1999
• Alphas, people of the highest intelligence (and social strata) in Aldous Huxley's Brave New World
• Alpha AI/Leonard L. Church, a main character of the Red vs Blue Series
• Alpha, a doll who went bad in the Dollhouse (TV series)

Science and mathematics

• α, the probability of Type I error in statistics, rejecting a null hypothesis when it is in fact true
• ALPHA, the ALPHA Collaboration, an experiment at CERN
• Alpha (biology), "alpha male" and "alpha female", the highest ranking individuals in a community of social animals
• Alpha (biology, taxonomy), the science of naming organisms, including the commonly used Linnaean taxonomy
• 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 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
• Alpha compositing, an image processing technique
• AlphaServer, DEC now HP machine successor to the VAX
• AlphaStation, DEC now HP workstation successor to the VAX
• DEC Alpha, an instruction set architecture developed by Digital Equipment Corporation (DEC)
• Wolfram Alpha, a search engine by Wolfram Research

Miscellaneous

• A grass also called esparto.
• 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 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
• Alpha Video
• GM Alpha platform
• Latin alpha (ɑ), also a symbol for open back unrounded vowel
• A psychedelic drug: alpha-ethyl-3,4-methylenedioxybenzylamine
• Sony α or Sony Alpha, a digital SLR series by Sony
• Minolta Alpha, the Japanese name for a series of SLR cameras known as Maxxum or Dynax elsewhere
• Space Station Alpha, the original name and unofficial call sign for the International Space Station
• Tropical Storm Alpha (2005)
• Alpha Secondary School, public high school in Burnaby, BC.

See also

• A
• Alfa
• Beta

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