What does the frequency of a photon actually mean?

1. Sep 23, 2005

Agnostic

Say you have one photon travelling through free space.

It has its energy level with its corresponding wavelength and frequency.

What does the frequency mean? What is it doing x amount of times per second?

Also, the same goes for the wavelength.

2. Sep 23, 2005

Mk

Electromagnetic waves moving through a vacuum, when v = c, can be described as velocity=speed of light/wavelength.

When light travel from one medium to another, frequency remains more or less the same, but wavelength and/or speed changes.

3. Sep 23, 2005

Agnostic

Awesome, that was sort of what I was thinking. Thanks for the clarification.

4. Sep 27, 2005

Claude Bile

More or less? Frequency is most certainly invariant, conservation of energy makes this so .

5. Sep 28, 2005

Mk

It's ok, I'm not interested.