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Crest and Trough of a light wave

  1. Mar 19, 2004 #1
    What exactly do the crest and trough parts of a light wave represent?
    Are they traversals that a electron takes or are they a mathematical
    analytical tool used in equations involving light? Or is the answer still unknown?
  2. jcsd
  3. Mar 19, 2004 #2
    I've screwed up enough tonight, so nothing complicated from me!

    Light isn't made of electrons. I think you're looking for photons.

  4. Mar 19, 2004 #3


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    They represent successive maxima and minima of the electric strength vector relative to the magnetic strength vector. And yes, this explanation works for photons too, since as we know, they have a wave nature (along with a particle nature), and the electric and magnetic strengths are effective features of that wave nature.
  5. Mar 19, 2004 #4
    yeah sorry i meant to say particle not electron.
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