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Solar Constant Calculator
Calculates Power and area with the solar constant, where the Sun is shining on the Earth's surface. The solar constant tells, with which intensity the Sun on average shines vertically on an area on Earth. Its value is 1361 watts per square meter. Hereby, Earth's atmosphere isn't taken into account, the practical value of the incoming radiation changes with weather and other atmospheric conditions. When the air is clear, about 75 percent of the radiation gets to the ground, 25 percent are reflected. Light clouds reflect about half of the radiation
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