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Homework Help: Flux density problem

  1. Oct 11, 2003 #1
    I have no ideal how to do this problem. Can someone explain it to me? What formula would i use?

    An isotropic quasimonochromatic point source radiates at a rate of 100 W. What is the flux density at a distance of 1 m? What are the amplitudes of the E and B fields at that point?
  2. jcsd
  3. Oct 12, 2003 #2
    "Isotropic" means that the emitted power is distributed uniformly over a circular shell. In this case, of radius 1m.
    "Quasimonochromatic" means, you may use a harmonic (sinus) wave. Just look up how E and B in such a wave depend on intensity. Key word: Poynting vector.
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