1/f noise at zero frequency or dc

[iVenky]

I read about 1/f noise. It says it is inversely proportional to frequency. What would happen at zero frequency or dc? Will it go to infinity? But when we measure some dc value we don't find any infinite voltage which clearly disproves this equation. What is the reason behind this?

Thanks in advance

 

[iVenky]

Come on. Someone answer me this question.

 

[Physics Monkey]

There will always be a cutoff beyond which the 1/f power spectrum is no longer valid. Finite observation time and finite system size will provide such a cutoff. If you have a particular system in mind, we can discuss the physics in more concrete terms.