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Redening of light from a certian density of particals

  1. Apr 11, 2005 #1
    i am trying to find a value for z or the redshift of light that would be caused by a certian density over a certian distance?
    if any one has a formula or knows of a place i can find out what resurch has been done it would be of great help thanks
    fish
     
  2. jcsd
  3. Apr 11, 2005 #2

    SpaceTiger

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    The reddening of light by dust or gas is not the same as a "redshift". When a spectrum changes by "reddening", the entire spectral shape changes. When it changes by redshift, it just shifts in frequency/wavelength.
     
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