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How does a given wave acquire it's frequency ?

  1. Oct 14, 2008 #1
    Hello to all,

    the space around us is filled with EM waves vibrating at different frequencies...

    my question is ; How does a given wave acquire it's frequency ?


  2. jcsd
  3. Oct 14, 2008 #2


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    Science Advisor

    The frequency of an electro-magnetic wave is determined by its energy. When an electron jumps from a higher energy level to a lower energy level, the lost energy goes into a photon. It is that difference in energy levels that determines the frequency.
  4. Oct 14, 2008 #3


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    Through the relation e=hf. Given a certain amount of energy due to be released (say by an electron changing state) the resultant wave will simply have that frequency.
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