Suvarna Garge (Editor)

Langley (unit)

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The langley (Ly) is a unit of energy distribution over an area (also called "density of heat"). 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, i. e.
  • 41840 J/m² (joules per square metre),
  • ca. 11.622 watt-hours per square metre.

    • References

    Langley (unit) Wikipedia
    (Text) CC BY-SA