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What is the intensity of an electromagnetic radiation?

  1. Sep 23, 2015 #1
    How can I compute the intensity of an electromagnetic radiation if I know ##e_x, e_y, e_z, h_x, h_y,## and ##h_z##, where ##e_i## is the electric field component at ##i## and ##h_i## is the magnetic field component, also at ##i##?

    Thank you in advance.
     
  2. jcsd
  3. Sep 23, 2015 #2

    jtbell

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    Staff: Mentor

  4. Sep 24, 2015 #3
    The intensity here is the amount of radiation received by a detector. Is it the same as the radiation per unit area per unit time?
     
  5. Sep 24, 2015 #4

    jtbell

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    Staff: Mentor

    If you want the amount of energy received by a detector that has a certain area, during a certain amount of time, then you multiply the Poynting flux (as given on that page) by the area and the time.
     
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