1/f noise at zero frequency or dc

iVenky
Messages
212
Reaction score
12
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
 
Physics news on Phys.org
Come on. Someone answer me this question.
 
There will always be a cutoff beyond which the 1/f power spectrum is no longer valid.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.
 

Thread 'Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect'

Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
View full post »

Thread 'Quantum behaviour of an electron around a positively charged sphere'

If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!
View full post »

Thread 'Does a qubit break interference in the double slit experiment?'

According to recent podcast between Jacob Barandes and Sean Carroll, Barandes claims that putting a sensitive qubit near one of the slits of a double slit interference experiment is sufficient to break the interference pattern. Here are his words from the official transcript: Is that true? Caveats I see: The qubit is a quantum object, so if the particle was in a superposition of up and down, the qubit can be in a superposition too. Measuring the qubit in an orthogonal direction might...
View full post »

Similar threads

Understanding 1/f Noise in DC Voltmeters: Causes and Solutions
Replies
5
Views
2K
I Does an electron have a quantum phase frequency?
Replies
36
Views
4K
A Power spectral density of a laser's frequency noise
Replies
6
Views
2K
Modern Digital Audio: Understanding Dither and Oversampling in Hi-Res Age
Replies
17
Views
4K
Understanding the Working Principle of PLL: Block Diagram & Applications
Replies
26
Views
6K
Can Resonant Frequency Disassociate Water Molecules?
Replies
12
Views
3K
Understanding Capacitor Behavior for Noise Filtering?
Replies
15
Views
4K
Some questions about Noise and Power spectral Density
Replies
5
Views
2K
Choosing a pulse capacitor, ESR vs reactance at frequency
Replies
5
Views
2K
Active power dissipated by a resistor from DC to RF
Replies
5
Views
2K

Hot Threads

Recent Insights

Back
Top