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How to measure angle of rotation of sucrose

  1. Aug 7, 2014 #1
    Hi all!

    Supposed I have my solution of sucrose, my light source, my polarizer.

    I shine my light source on my polarizer and plane polarized light passes through my solution, how then do I measure the how much my solution has rotated my polarized light by?

    And also, what kind of container should I place my solution in?

  2. jcsd
  3. Aug 7, 2014 #2


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    Science Advisor

    You need two polarizers and a tube (material not important). Just fill in the sucrose solution into the tube whose ends you may close by glueing glass plates (not plastic, as it will probably act as a polarizer, too). Comparing with the empty tube, you will have to rotate the polarizers on both sides so as to get maximum (or minimum) intensity. Google "polarimeter".
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