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Define the term solar constant.

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2 Answers

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Solar Constant: The rate at which solar energy arrives at the top of the atmosphere is called 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 or 1367 or 1370 W/m2 ., the so-called “Solar Constant”. 

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Solar energy arrived atmosphere at a constant rate of 1350W/M²

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