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Scatter vs diffusion

  1. Feb 11, 2006 #1
    Hi. I want to know whats the difference between scatter and diffusion.... I am trying to understand what happens to the electromagnetic wave when we are talking about scattering and about light diffusion.. I think that the result of scattering it to make the light to diffuse.. Is that right?
     
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  3. Feb 11, 2006 #2

    mathman

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    Scattering usually is used when the number of changes by the medium is small and somewhat separated. Diffusion is used when there are a large number of changes and the separations are small.
     
  4. Feb 23, 2006 #3
    Thx a lot for your answer but can u plx expalin me a little more what u have said above
     
  5. Feb 24, 2006 #4

    mathman

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    For example - a photon (gamma ray) hits an electron and changes direction. This is a single scatter. Alternatively - light going through a fog undergoes many interactions (individual scatters don't mean much) This is diffusion. To some extent, quantitative difference becomes qualitative.
     
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