Incident light angle brightness

  1. jcsd
  2. Meir Achuz

    Meir Achuz 2,059
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    The brightness would go like cos of the angle.
     
  3. Is this only because the greater the angle, the greater the surface area that the beam interacts with? Or are there other factors?
     
  4. Meir Achuz

    Meir Achuz 2,059
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    It is just that Intensity = Power/area
     
  5. robphy

    robphy 4,213
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    There is also an inverse-square dependence, which is negligible if (for example) a point-like source is very far from the surface.
     
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