1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Fourier transform for beginners?

  1. Apr 23, 2013 #1

    I really don't understand Fourier transform.
    Do somebody know a good book for beginners?
    Something like fourier transform for dummies or so?

    I need it just for physics.
    So it don't have to be to mathematical. ^^
  2. jcsd
  3. Apr 23, 2013 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper

    I'm afraid it has to be mathematical: the language of physics is maths.

    The fourier transform is just this:

    ##F(\nu)## is the fourier transform of ##f(t)## if $$F(\nu) = \int_{-\infty}^\infty f(t)e^{-2\pi i\nu t}dt$$

    That's it!

    The rest is exploring the consequences.
    You should start by finding the Fourier transform of ##f(t)=A\sin\omega t## ... I'm afraid you just have to do the math until you get it.

    In a nutshell - you know how any function can be written as a sum of sine waves?
    The Fourier transform is part of that.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook