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ReferencesInformation on solar radiation and spectra at Newport |
Extraterrestrial Irradiation: The Solar Constant
The intensity of solar irradiation directly outside the earth’s atmosphere on a horizontal surface is almost constant at around 1,360 W/m2., the so-called “Solar Constant”. |
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There is a variation of solar intensity of about 1%, but this is a slow cycle. It is so small that it is negligible for the purpose of solar power. |
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