albedo

(1) The ratio of the amount of electromagnetic energy reflected by a surface to the amount of energy incident upon it, often expressed as a percentage. Example: the albedo of the Earth is 34 percent. (2) The reflectivity of a body as compared to that of a perfectly diffusing surface AT the SAME distance from the Sun, and normal to the incident radiation. Albedo may refer to the entire solar SPECTRUM or merely to the visible portion.

Related Terms
planetary albedo,

External links for albedo
albedo on Wikipedia
albedo on Google
albedo on Yahoo!
albedo on Answers
albedo on The Free Dictionary

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