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.
Definition
One langley is
- 1 thermochemical calorie per square centimetre,[1] i. e.
- 41840 J/m² (joules per square metre),
- ca. 11.622 watt-hours per square metre.[2]
See also
References
- ^ 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.
- ^ Solar Energy at Race Rocks
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