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Is it possible to find refractive index from diffraction?

  1. May 3, 2016 #1
    1. The problem statement, all variables and given/known data
    I am trying to find the refractive index nylon (fishing line) , however when I used a laser onto the fishing line (nylon) it looked like it diffracted.

    2. Relevant equations
    I am able to find the diffraction if that was what it was showing, however I dont know how to calculate after that.

    https://www.dropbox.com/s/k083dkj18xcdgro/CIMG3662.JPG?dl=0
    https://www.dropbox.com/s/nq0d2iwd2kjem74/CIMG3664.JPG?dl=0
    https://www.dropbox.com/s/ew0ys9dfqa1f4ol/CIMG3665.JPG?dl=0
    https://www.dropbox.com/s/vs4nieam2yxy1t7/CIMG3666.JPG?dl=0
     
    Last edited: May 3, 2016
  2. jcsd
  3. May 3, 2016 #2

    BvU

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    Nice shots ! Hello JPL, :welcome:

    As an experimentalist, I would compare the patterns you obtained with
    1. the pattern you get from a steel wire (or otherwise opaque wire) with same thickness
    2. the pattern you get with a slit as wide as the wire is thick
     
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