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Homework Help: Polarisation of electromagnetic waves?

  1. Jan 11, 2007 #1
    I have an a-level exam tomorrow which is really important in deciding whether I can get into uni or not. So basically I am having a panic moment. Could you PLEASE tell me how you polarize electro-magnetic waves? What is the effect of polarization? Why do we polarize waves? How can you tell if a wave is polarized? How can you unpolarize a wave?

    Sorry if thats to much. Thanks in advance.
  2. jcsd
  3. Jan 11, 2007 #2


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  4. Jan 11, 2007 #3
    yes good luck
  5. Jan 11, 2007 #4
    thanks very much
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