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Homework Help: Photons incident on the retina?

  1. Oct 19, 2005 #1
    Sorry I just want to check that this is a reasonable estimate.

    I calculated the amount of photons incident on the eye per second is about 6*10^10. This is from the night sky background and just seems way too much.
    Sorry for such a stupid question.

    thanks for any help
  2. jcsd
  3. Oct 19, 2005 #2


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    There is no way to check if this is a "reasonable estimate" if you do not tell us the parameters that you started with. What are the numbers you used as the starting point such as the amount of light from the night time sky?

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