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Angular frequency

  1. Mar 28, 2010 #1
    I am doing some practice and need help with a problem,
    I am trying to find the angular frequency of an electromagnetic wave given a general wave equation in standard form
    Esin(kx-wt)
    I am given the variable k,, and i need to find the angular frequency w. I am not sure how to do this without finding the period, which i can't find without angular velocity.
     
  2. jcsd
  3. Mar 29, 2010 #2
    DO you know the relation of wave number (or wave vector) k with speed of light and [tex]2\pi[/tex]? From that you can find wave length or period.
    For electromagnetic wave you know it travel with light's speed.
    So for a given k you can find its angular frequency.
    good luck
     
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