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Why is light attenuation not linear?

  1. Nov 8, 2014 #1
    I was wondering why light transmission through a solution decreases exponentially and not linear with the concentration of the absorbing compound in solution. I know the Beer-Lambert law, but I do not really understand the reason for this logarithmic rather than linear dependence. Can anyone explain this in simple words using examples a non-physicist can understand? :)

    Many thaks in advance.
  2. jcsd
  3. Nov 8, 2014 #2


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    2017 Award

    Staff: Mentor

    If there is less light, there is less absorption.
    Both are proportional to each other.
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