Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Monochromatic flux expression?

  1. Feb 27, 2008 #1
    hi, im having trouble deriving an expression for converting between monochromatic flux expressed in wavelength and in frequency units.

    i think that the monochromatic flux of a star is found by

    F(Δf) = ΔE / ΔtΔfΔA

    F(Δλ) = ΔE / ΔtΔλΔA

    where
    E = energy,
    t = time,
    Δf = frequency bandwidth,
    A = area of photon collecting surface, and
    Δλ = wavelength bandwidth.

    i was shown how to do this question by my tutor but i cant remember how to do it, it involved differentiation or integration i think...

    so can you please help, its important that i find out how to do this quickly.

    thanks!!

    oh, and if you take the time to answer, could you please give me an explanation, as the answer itself doesn't really teach me anything, i'm more interested in how you found that answer.
     
  2. jcsd
  3. Feb 27, 2008 #2
    I think you should be posting this in the homework section.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Monochromatic flux expression?
  1. Luminosity and flux (Replies: 1)

  2. Neutrino Flux (Replies: 1)

  3. Intensity and flux (Replies: 1)

  4. The protom flux (Replies: 3)

Loading...