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Homework Help: Contrast of a grating?

  1. May 8, 2008 #1
    1. The problem statement, all variables and given/known data

    Sorry if this comes out the wrong way, but I have to translate my problem from norwegian to english... but I'll give it a shot ;)

    Task 1a was to find some maximal and minimal amplitudes.
    Those I found: max 30 units and min 10s unit.

    Task 1b is to use these amplitudes to find the contrast of the sinusoidal grating.
    This I have no idea how to do.
    Can someone please show me what to do - and also explain what you do and why you do it?

    2. Relevant equations
    perhaps: h sin ø = lamda ?
    But then again, what has lamda to do with any of this? :S

    3. The attempt at a solution
  2. jcsd
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