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Why does the sunlight hurt our eyes when we look at the sun?

Why does the sunlight hurt our eyes when we look at the sun?
Abigail Catline Smith from West Yorkshire (Aged 5-14)

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2 Responses

  1. Because it is far too bright and will damage the retina if you try.
    Never look at the sun with the naked eye, even during a total eclipse.

  2. That is avery good question Abigal. The sun is a very bright object in the sky and the receptors in our eyes are very sensitive to light. Also, the lens in our eyes is able to focus the light from the sun onto a small spot. If that happens it is possible to burn the receptors in the same way a lens can burn your hand with an image of the sun. There is a lot of energy coming down from the sun,

    Also, as part of evolution we needed to develop a protection mechanism or pain so that we would learn to protect our eyes from lust such an event.

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