Difference between revisions of "Solar constant"
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It is equal to 1353 Watts per square meter or 492 Btu per square foot. | It is equal to 1353 Watts per square meter or 492 Btu per square foot. | ||
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Revision as of 22:32, September 23, 2015
Solar constant is the average amount of solar radiation that reaches the earth's upper atmosphere on a surface perpendicular to the sun's rays.
It is equal to 1353 Watts per square meter or 492 Btu per square foot.