Gamma: Wikis


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From Wikipedia, the free encyclopedia

Gamma uc lc.svg
Greek alphabet
Αα Alpha Νν Nu
Ββ Beta Ξξ Xi
Γγ Gamma Οο Omicron
Δδ Delta Ππ Pi
Εε Epsilon Ρρ Rho
Ζζ Zeta Σσς Sigma
Ηη Eta Ττ Tau
Θθ Theta Υυ Upsilon
Ιι Iota Φφ Phi
Κκ Kappa Χχ Chi
Λλ Lambda Ψψ Psi
Μμ Mu Ωω Omega
Obsolete letters
Digamma uc lc.svg Digamma Qoppa uc lc.svg Qoppa
San uc lc.svg San Sampi uc lc.svg Sampi
Other characters
Stigma uc lc.svg Stigma Sho uc lc.svg Sho
Heta uc lc.svg Heta

Greek diacritics

Gamma uppercase Γ, lowercase γ; Greek: Γάμμα) is the third letter of the Greek alphabet. In the system of Greek numerals it has a value of 3. It was derived from the Phoenician letter Gimel Gimel. Letters that arose from Gamma include the Roman C and G and the Cyrillic letters Ge Г and Ghe Ґ.

In Modern Greek, it represents either a voiced velar fricative /ɣ/ or a voiced palatal fricative /ʝ/. In Ancient Greek, it represented a voiced velar stop /ɡ/. Before velars, it represents a velar nasal /ŋ/ in Modern as well as Ancient Greek, and a double gamma represents the sequence /ŋɡ/ (phonetically varying [ŋɡ~ɡ]) or /ŋɣ/.

Combinations with other Greek letters

The gamma can be combined with other letters or itself.

  • A double gamma (γγ) is pronounced like the ng in "finger"
  • A gamma with xi (γξ) is pronounced roughly like the nx in "sphinx"
  • (γχ) is pronounced like the nkh in "ankh"
  • A gamma combined with kappa (γκ) is pronounced like the nk in "banker"

Use as a symbol or a term

The lower-case letter γ is used as a symbol for:

The upper-case letter Γ is used as a symbol for:

See also


Up to date as of January 15, 2010

Definition from Wiktionary, a free dictionary

See also gamma


German Wikipedia has an article on:

Wikipedia de


Gamma n.

  1. gamma (greek letter)

Simple English

Gamma is a Greek letter. Used as a symbol or name it may refer to:



  • Latin gamma, used as an IPA symbol for voiced velar fricative, and in the alphabets of African languages.

Science and Mathematics

The Greek letter gamma is used in both science and mathematics very often.


  • Gamma wave, a type of brain wave
  • Lapse rate, the temperature change with height in an atmosphere
  • linewidth, relating to uncertainty of mass energy in short-lived particles
  • Gamma is an old non-SI name for either a microgram or for a nanotesla, SI units
  • Gamma quadra, in Socionics

Lower case, γ

  • Gamma correction, a property of images and video displays
  • Gamma ray, also Gamma radiation, an electromagnetic ray
  • Adiabatic index, also known as the Heat capacity ratio, the ratio of the heat capacity at constant pressure to that at constant volume.
  • Bayer designation, the third brightest star
  • Euler-Mascheroni constant, a mathematical constant
  • photon, seen as an elementary particle in physics
  • Lorentz factor in relativity theory and astronomy
  • propagation constant of an electromagnetic wave
  • voiced velar fricative in phonetics

Upper case, Γ

  • Gamma distribution, a probability distribution function
  • Gamma function, a mathematical function
  • Christoffel symbol in General Relativity
  • reflection coefficient in electrical engineering
  • mathematical finance, where it is a risk measure, or Greek
  • center of the Brillouin zone
  • The Feferman-Schütte_ordinal Γ0


  • Gamma software, in computer software and video game development
  • GM Gamma platform - a subcompact automobile platform by General Motors
  • Gamma correction, in video, graphics, color spaces, and photographic imaging
  • Elias gamma coding, in computer science, encoding, compression

Things and places

  • Tropical Storm Gamma, a Atlantic tropical storm

Popular culture

  • Brave New World, where it is the third caste
  • E-102 Gamma, a video game character
  • Gamma (band), a rock band

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