Alpha

From Free net encyclopedia

Alpha may refer to:

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
    • 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
  • In organic chemistry:
    • to indicate the position of a group in a molecule e.g. Alpha carbon
    • as stereodescriptors [1]
  • In Bayer designation, the typically brightest star in a constellation
  • The significance level in statistical hypothesis testing

Place names

• Alpha, Michigan
• Alpha, Minnesota
• Alpha, New Jersey
• Alpha, Queensland

Media and literature

• Alpha (band), a British electronic music group.
• 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
• ARC Trooper A-17, nicknamed "Alpha", a character from the Star Wars films
• The highest social class in Aldous Huxley's novel Brave New World.
• The primary setting for the fictional television series Space: 1999
• The Robot on the Original Mighty Morphin Power Rangers

Science and mathematics

• Alpha (biology), "alpha male" and "alpha female", the highest ranking individuals in a community of social animals
• Alpha (Investment), a measuring of risk-adjusted performance
• Alpha (Radio navigation), a Russian radio navigation system, siniliar to the former Omega Navigation System
• Alpha channel, a transparency information layer to supplement the three RGB color layers to make the RGBA color space.
• Alpha waves, recorded by electroencephalography
• Cronbach's alpha, a statistical measure of reliability.
• DEC Alpha, a microprocessor from Digital Equipment Corporation.
• A possible name for the International Space Station.
• An early development stage in software engineering (e.g. an Alpha version)

Other

• Alpha Group, a dedicated counter-terrorism unit that belongs to OSNAZ
• Alpha class submarine, a Russian fast attack nuclear submarine
• Alpha course, an introductory course in Christianity
• Tropical Storm Alpha (2005)

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