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Example for Poynting's Theorem

  1. Feb 11, 2008 #1
    Hi,

    Anyone knows a good example to aply Poynting's Theorem?

    The one thas defines the conversation of energy in the electromagnetic field?

    Regards Martin
     
  2. jcsd
  3. Feb 12, 2008 #2

    Andy Resnick

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    Laser tweezers?
     
  4. Feb 12, 2008 #3
    Laser tweezer?

    I dont have a clue, how they work.

    Which parts of the Equaction are involved?

    The integral of the Poyntig Vektors, and which more?
     
  5. Feb 13, 2008 #4

    pam

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    Absorbed sunlight, heating a surface.
     
  6. Feb 13, 2008 #5

    Andy Resnick

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    A laser tweezer maintains a trapped object by light scattering. Momentum from the light is transferred to the trapped particle. Alternatively, the focused beam of light creates a potential well for the particle.

    There's lots of material out there- my understanding was that you were looking for an interesting problem to solve. Is that wrong?
     
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