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Radiometric quantities

  1. Aug 9, 2010 #1
    Hello everyone,

    I'm hoping someone can help me understand (in a most general fashion possible) a relations between radiometric quantities and physic of EM wave.

    With EM wave quantities that are usually mentioned in books (at least the ones I've found) are:
    - energy density of EM wave (this is a time dependent and position in space dependent value as far as I understand).
    - Poynting vector (this is a time dependent and position in space dependent value as far as I understand).

    Now within radiometry there are among others following quantities:
    - Radiant energy
    - Radian flux (also called radiant power)
    - Radiant energy density

    I understand that all of thos quantities can either be treated as a functions of wave lenght of "in total" - by integrating over a spectrum. So looking at them at a fixed wave lenght (so that each is a function of wave lenght) my question is - how those radiant quantities relate to physical quantities?

    Thanks in advance

    P.S. I'm not a physicist but a mathematician, so don't hesitate to put an equation or three in here :)
     
  2. jcsd
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