gamma
gamma 


pronunciation  
antique  [ g ]  
modern  [ ɣ, j ]  
Equivalents  
Latin  G  
Cyrillic  Г  
Hebrew  ג  
Arabic  ج  
Phoenician  ?  
transcription  
From the ancient world  G  
From the modern  g (see naming convention )  

The Gamma ( Greek neuter γάμμα , Majuskel Γ, minuscule γ) is the third letter of the Greek alphabet and has after the Milesian system the numerical value of 3.
use
 In physics:
 γ is the symbol of the photon . In a narrower sense, it only refers to the photons of very high energy ( gamma rays ) in technology.
 γ denotes the Lorentz factor .
 γ is also used as a symbol of the gyromagnetic ratio .
 More rarely, γ is also used as a symbol for the gravitational constant .
 In quantum field theory , the Dirac matrices are denoted by γ.
 As a symbol for the weights , the ratio of weight to volume of a physical body.
 In high energy physics, Γ denotes the decay width
 In thermodynamics , γ often denotes the adiabatic exponent .
 In mathematics:
 γ denotes the EulerMascheroni constant .
 The Γfunction describes a function that can be understood as an extension of the factorial function to the complex number level. The following relationship exists for all natural numbers :
 In differential geometry , Γ denotes the Christoffel symbols .
 In probability theory, the gamma distribution describes a distribution function.
 In statistics, gamma (symbol:) is a measure of ordinal association that, like , or (tau a, tau b, tau c) is based on the couple concept.
 In computer science:
 When displaying images using electronic devices or in image processing, an abbreviation for gamma correction . It is a matter of adapting or correcting the gradient of the grayscale values (i.e. the middle values) between 100% black and 100% white. Or also: Correction and adaptation of the course of the mean color brightness, color values or gradations (to the visual sensitivity of the eye).
 In communications engineering, Γ denotes the SNR gap , which models the difference between theoretical and achievable channel capacity.
 The symbol for the ribbon alphabet of a Turing machine
 As a unit:
 Gamma ( unit symbol γ) is an obsolete unit of magnetic flux density since 1970 .
 γ was used synonymously for micrograms until the beginning of the 20th century .
 Related to linguistics:
 Letter used for transliterating a character in the Mongolian script .
 In the International Phonetic Alphabet , the minuscule gamma ɣ is the symbol for the voiced velar fricative
 Further use:
 In astronomy, the gamma value of a solar eclipse indicates how centrally the moon's shadow hits the earth.
 In construction , γ often denotes a partial safety factor .
 In plant physiology, Γ denotes the CO _{2} compensation point
 In medicine , especially in anesthesia and intensive care medicine , γ is sometimes used as an alternative designation for one microgram per kilogram of body weight per minute, especially for the dosage of catecholamines .
 In option theory , Γ denotes the second derivative of the option price after the price of the underlying asset.
See also
 gamma rays
 Gammazism
 Gamma correction
 Gamma distribution
 Gamma function
 Gammaray burst
 Gamma Spectroscopy
 Г (Cyrillic letter)
Wiktionary: Gamma  explanations of meanings, word origins, synonyms, translations