Langley (unit)

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The langley (Ly) is a unit of energy distribution over an area (also called "density of heat"[1]). It is used to measure solar radiation (or insolation). The unit was named after Samuel Pierpont Langley (1834-1906) in 1947.


One langley is

See also[edit]


  1. ^ a b "Appendix B9. Conversion Factors.". NIST Guide to the SI. The National Institute of Standards and Technology. 2010-10-05. Retrieved 2013-04-14. 
  2. ^ Solar Energy at Race Rocks