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The Solar Constant refers to how much energy Earth gets from the Sun, per square meter (or another convenient unit of area). It is approximately 1.3-1.4 kW/m2 at the top of the atmosphere; the amount that reaches the surface is perhaps 2/3 of that value under ideal conditions - for example, no clouds.

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10y ago
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13y ago

Solar constant measures the quantity of solar radiation incident normally per minute on 1 cm2 surface of a perfectly black body on the Earth.

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9y ago

Please look at disscussion first.

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Q: What does the solar constant measure?
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