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**Physics, Astronomy & Cosmology / How many photons does the Sun emit every second? How many reach earth?**

« **on:**13/12/2016 22:05:40 »

I found a web site claiming that the sun emits 10 to the power of 45 photons per second. I wonder how many of them hit Earth each second? How many photons enter our eyes each second in a sunny day?