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Question:
How much gamma, infra-red, ultraviolet & x-ray radiation actually reaches the Earth's surface from the Sun (%)?



Replies:
There is almost no gamma or x-ray radiation from the Sun. The amount of visible and near visible light from the Sun follows the black body formula (radiation from a hot body). I will need to look up the amount of visible light from the Sun, which is called the solar constant by some people. I think it is something like a watt per square meter, but I will have to look it up. This will be the total amount of energy in the visible range.

Samuel P Bowen



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