#### serhannn

##### Member level 4

I know how to find the Fourier series of signal and how to take Fourier transforms but one point behind the logic of all these things remain unresolved in my head. Why do we get the frequency spectrum of a signal when we take the Fourier transform of the time-domain signal? I mean, as a mathematical tool I nearly understand the Fourier transform, but I cannot connect it to the signal domain. Why does the Fourier transform have this physical meaning for electrical signals?

Thanks a lot,

Serhan