"Frequency" of the polarization of light You often see the polarization of light represented this way: Unfortunately, the axis is seldom labeled in this type of animation. I assume the horizontal axis is meant to represent space or time. The question I have is "Does the fluctuation frequency of the electrical field match the wave length of the photon?" To be a little clearer, if you have a photon with quite a long wavelenth (say microwave at 21cm), the wavelength represents the changing probability of things like the photon being reflected when it hits a surface. I assume that the magnetic/electrical fluctuation represented by this picture happens much faster over a much shorter distance then 21cm. Is that assumption correct, or does the electrical/magnetic fluctuation rate of the photon match its frequency?