태양 복사 에너지를 측정하는 단위로, 1제곱센티미터당 1그램칼로리의 에너지를 나타낸다.
A unit of energy flux density used to measure solar radiation, equivalent to one thermochemical calorie per square centimeter.
예문:
"The total solar radiation received at the surface was recorded in langleys per minute."
"Meteorologists use the langley to quantify the amount of solar energy reaching a specific area."