Lambda
From Wikipedia, the free encyclopedia.

Lambda (Λ λ) is the 11th letter of the Greek alphabet and has a numeric value of 30.

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

• The lambda particles in particle physics.

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

• The wavelength of a wave in physics.
• The Lambda phage virus in biology.
• The definition of anonymous functions in lambda calculus and, by extension, some programming languages.
  • The language Unlambda is made up completely of lambdas, but they cannot be stored, hence the un-.
• Gay pride (explanations for this usage vary).

The original article can be found at: http://en.wikipedia.org/wiki/Lambda.
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