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I Refractive index as a function of the concentration of a sugar solution

  1. Jul 20, 2017 #1
    We recently performed an experiment with the idea to find refractive index of medium (water) as a function of wavelength of light. We then added some sugar to see how the refractive index changes with concentration of sugar solution. We got the following graphs.

    HvMkj.png

    k2slE.png


    Are the relationships actually linear? Or are these just limiting cases?
     
  2. jcsd
  3. Jul 20, 2017 #2

    mfb

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    Nearly nothing is exactly linear, but for small changes most things are approximately linear.

    With the wavelength it is easy to see that it cannot continue like that - you would get negative values for very long wavelengths.
     
  4. Jul 20, 2017 #3

    Andy Resnick

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    Why did you assume there is a linear relationship?
     
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