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langley
Unit systemNon-SI metric unit
Unit ofHeat flux
SymbolLy
Named afterSamuel Langley
Derivation1 calth/cm2
Conversions
1 Ly in ...... is equal to ...
   SI units   41 840 J/m2

The langley (Ly) is a unit of heat transmission, especially used to express the rate of solar radiation (or insolation) received by the earth. The unit was proposed by Franz Linke in 1942[1] and named after Samuel Langley (1834–1906) in 1947.

Definition

One langley is

See also

References

  1. ^ Gyllenbok, Jan (2018). "langley". Encyclopaedia of Historical Metrology, Weights, and Measures, Volume 1. Birkhäuser. p. 139. ISBN 9783319575988.
  2. ^ "Appendix B9. Conversion Factors". NIST Guide to the SI. The National Institute of Standards and Technology. 2010-10-05. Retrieved 2013-04-14.
  3. ^ "Solar Energy at Race Rocks". Archived from the original on 2013-10-05. Retrieved 2010-08-05.


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