Alpha

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Alpha may refer to:

Contents 1 The Greek letter alpha 2 Place names 3 Media, literature and fiction 4 Science and mathematics 5 Computing 6 Other 7 See also

[edit] The Greek letter alpha

Alpha (letter), a letter in the Greek alphabet. α may be used as the symbol for:

• Angle of attack in aerodynamics
• Common-base current gain of a transistor in electronics
• In physics:
  • Angular acceleration
  • Fine-structure constant, a fundamental physical constant
  • Alpha particle, form of particle radiation
  • 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
• Alpha channel, describing transparency and opacity in computer graphics
• 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.

[edit] 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

[edit] Media, literature and fiction

• Alpha (band), a British electronic music group
• Alpha Books, an imprint of Penguin Group (USA)
• Alpha (Alice Nine album), an album by J-rock/Visual Kei band Alice Nine
• Alpha (Sevendust album), an album by the band Sevendust
• Alpha (album), an album by the band Asia
• Alpha Magazine, Australian men's sport magazine
• Alpha (computer), a fictional computer in Mike Walker's radio play Alpha
• Alpha (Magic: The Gathering), the first Magic: The Gathering cards set
• Alpha 5/Alpha 6/Alpha 7, nicknames of the characters in the Power Rangers television programs
• Alpha TV, a Greek terrestrial channel
• Moonbase Alpha, the primary setting for the television series Space: 1999
• Alpha (DC Comics), a character from DC Comics
• Alpha the Ultimate Mutant, a character featured in Marvel Comics
• Alpha (planet) in Isaac Asimov's novel Foundation and Earth
• Alpha Legion, a Chaos Space Marines company from Warhammer 40,000
• Alpha Range, the leader of 'The C Pack'

[edit] Science and mathematics

• 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
• Cronbach's alpha, a statistical measure of reliability
• ALPHA, the Antihydrogen Laser PHysics Apparatus, an experiment at CERN.
• Another term for the angle of attack on an aircraft's wing.

[edit] Computing

• 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
• Alpha, a development stage of software
• DEC Alpha, a microprocessor/central processing unit (CPU)
• AlphaServer - DEC now HP machine successor to the VAX
• AlphaStation - DEC now HP workstation successor to the VAX

[edit] Other

• Latin alpha, an open front unrounded vowel
• Space Station Alpha, the original name and unofficial call sign for the International Space Station
• The first letter in the NATO phonetic alphabet
• Service "A", one of the uniforms of the United States Marine Corps
• Alpha (radio navigation), a Russian radio navigation system similar to the former Omega Navigation System
• Alpha 2000, a light aircraft built in New Zealand
• Alpha Group, a dedicated counter-terrorism unit that belonged to OSNAZ
• Alpha class submarine, a Russian fast attack nuclear submarine
• Alpha course, an introductory course in Christianity
• Sony α or Sony Alpha, a digital SLR series by Sony
  • 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
• Tropical Storm Alpha (2005)
• Alpha Industries, clothing company
• Alpha coefficient in finance, the risk-adjusted return of an investment
• GM Alpha platform

[edit] See also

• Alfa
• Beta