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langley (unit)

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Please help improve this article or section by expanding it. Further information might be found on the talk page or at requests for expansion. This article has been tagged since January 2007.

The langley (Ly) is an international unit used to measure solar radiation (or insolation). The unit was named after Samuel Pierpont Langley (1834-1906) in 1947.

[edit] Definition

One langley is exactly 1 thermochemical calorie per square centimetre. In SI units, 1 langley is exactly 41840.00 J/m² (or joules per square metre).

Retrieved from "http://en.wikipedia.org/wiki/Langley_%28unit%29"

Categories: Articles to be expanded since January 2007 | All articles to be expanded | Units of measure | Non-SI metric units

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• This page was last modified 08:19, 26 May 2007.
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