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Thread: Magnitude of magnetic field in light

  1. #1 Magnitude of magnetic field in light 
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    Hi , This is my first post , I hope I'll keep on........

    I wonder how to calculate the intensity of the magnetic field component of an electromagnetic wave at a given point , given some information like frequency and intensity . Providing that using fourier transform a square wave is generated , will the magnetic field be constant with time over a given interval

    thanks in advance :wink:


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  3. #2  
    Moderator Moderator Dishmaster's Avatar
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    There are two things for you to look up. You can measure the polarisation of light waves or use the Faraday rotation effect.


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  4. #3  
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    There are two things for you to look up. You can measure the polarisation of light waves or use the Faraday rotation effect.
    I've already read the two articles but there is no method to calculate the magnitude of the magnetic field component of an em wave of any polarization.
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  5. #4  
    Moderator Moderator Dishmaster's Avatar
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    Quote Originally Posted by MOnte
    There are two things for you to look up. You can measure the polarisation of light waves or use the Faraday rotation effect.
    I've already read the two articles but there is no method to calculate the magnitude of the magnetic field component of an em wave of any polarization.
    You can use the Stokes parameters, whose combinations give you the electric and the magnetic field.
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