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Light cast on a surface

  1. Nov 10, 2013 #1

    adjacent

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    Why does a light cast on a surface look dimmer when a much intense light is cast upon it?
     
  2. jcsd
  3. Nov 10, 2013 #2

    Drakkith

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    Can you be a little more specific? Are you talking about the difference in intensity between a light source and the reflected light from a surface, or is there more than 1 light source?
     
  4. Nov 10, 2013 #3

    adjacent

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    I shined a light on a wall,for example.It looks OK.Then I shined another light on that wall exactly on that place.Now,the previous light looks more dim.Why?
     
  5. Nov 10, 2013 #4

    Drakkith

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    That's the way your brain works. In some part, it bases the level of contrast off of the darkest and brightest areas in view.
     
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