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Astronomy

Is the albedo of pencil lead closer to 0.1or 0.5 or 0.9?

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July 11, 2009 4:35PM

Probably even lower than 0.1. Albedo is a measure of the reflectiveness of an object; perfectly reflective would be 1.0, while a perfect absorber of light would be 0.0. (Neither such objects actually exist, but some come close.)