Alpha (disambiguation)

Look up alpha in Wiktionary, the free dictionary.

Alpha (Α or α) is the first letter of the Greek alphabet. Alpha or ALPHA may also refer to:

Computing and technology

Alpha (programming language), an early database language
Alpha compositing, an image processing technique
Alpha release, alpha test, an early phase in software development
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)
Minolta Alpha, the Japanese name for a series of SLR cameras known as Maxxum or Dynax elsewhere
Sony α or Sony Alpha, a digital SLR series by Sony
Wolfram Alpha, a search engine by Wolfram Research
ASCII characters A-Z and a-z, as defined in RFC 4234
Alpha, a reference to transparency in Alpha compositing

Alpha (finance), a measurement of risk-adjusted performance
Cronbach's alpha, a statistical measure of reliability
α, the conventional symbol for angular eccentricity
α, a symbol for navigational azimuth
α, a symbol for one of the Feigenbaum constants describing a bifurcation diagram, in mathematics
α, a symbol representing the probability of a type I error in statistics
The inverse Ackermann function
α is sometimes used as a placeholder for ordinal numbers

Alpha (ethology) (also "alpha male" and "alpha female"), the highest ranking individuals in a community of social animals
ALPHA, a particle physics experiment at CERN
Alpha carbon in organic chemistry
ALPHA Collaboration, (Antihydrogen Laser PHysics Apparatus), a team of scientists
Alpha helix, a common motif in the secondary structure of proteins
Alpha particle, form of particle radiation
Alpha taxonomy, the science of naming organisms
Alpha waves, recorded by electroencephalography
H-alpha, or H-α, an emission line created by hydrogen atoms
α, a symbol for the angle of attack in aerodynamics
α, a symbol for angular acceleration in physics
α, a symbol for coefficient of thermal expansion in thermodynamics
α, a symbol for the fine-structure constant in physics
α, a symbol for thermal diffusivity in thermodynamics
α, a symbol for common-base current gain of a transistor in electronics
α, the isotope fractionation factor between two substances in geochemistry
Alpha, the brightest star in a constellation according to the Bayer designation
α₁ and α₂, or alpha-1 and alpha-2, adrenergic receptors

In the United States

Elsewhere

Alpha (computer), a fictional computer in Mike Walker's radio play Alpha
Alpha (planet) in Isaac Asimov's novel Foundation and Earth
The Alpha Quadrant, one of the four Galactic Quadrants in the fictional Star Trek universe
Alpha (DC Comics), a character from DC Comics
Alpha (Marvel Comics), a character from Marvel Comics
Alpha 4 (Power Rangers)/Alpha 5 (Power Rangers)/Alpha 6 (Power Rangers)/Alpha 7 (Power Rangers), a "series" of characters in Power Rangers television programs
Alpha Legion, a Chaos Space Marines Legion from Warhammer 40,000
Alpha the Ultimate Mutant, a character featured in Marvel Comics
Moonbase Alpha, the primary setting for the television series Space: 1999

Alpha (Lombard), a Franco-Belgian comics series
Alpha (magazine), Australian men's sport magazine
Alpha Books, an imprint of Penguin Group (USA)
Alpha Girl, a 2012 Image Comics comic book series by Jean-Paul Bonjour and Jeff Roenning
Alpha Knightmare Frame, used by the "Irregulars" in the manga version of Code Geass: Lelouch of the Rebellion
The Alphas, a young-adult novel series by Lisi Harrison
Alpha 1 through Alpha 9, a series of nine science fiction anthologies edited by Robert Silverberg and published between 1970 and 1978. See Robert Silverberg bibliography#Anthologies edited

Advance Alpha, a Swiss paraglider design
Alpha coefficient in finance, the risk-adjusted return of an investment
Alpha Bank, a Greek bank, or their stock symbol ALPHA
ALPHA (psychedelic), psychedelic drug alpha-ethyl-3,4-methylenedioxybenzylamine
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 class submarine, a Russian fast attack nuclear submarine
Alpha course, an introductory course in Christianity
Alpha Group, a dedicated counter-terrorism unit that belonged to OSNAZ
Alpha Industries, clothing company
Alpha Secondary School, public high school in Burnaby, BC
Alpha Video
GM Alpha platform
Kohler Alpha, glider
Latin alpha (ɑ), also a symbol for open back unrounded vowel
Space Station Alpha, the original name and unofficial call sign for the International Space Station
Tropical Storm Alpha (2005)
A grass also called esparto
The first letter in the ICAO spelling alphabet
Service "A", one of the uniforms of the United States Marine Corps
Pipistrel Alpha Trainer, light aircraft