How does Cherenkov radiation work?

raul_l

So the faster the particle goes, the higher the frequency of the emitted photon? How's that? I understand that the speed light should remain the same in the medium. I don't see how the frequency of light depends on the rate of disturbance in the EM field (the speed of the passing charge).

raul_l	So the faster the particle goes, the higher the frequency of the emitted photon? How's that? I understand that the speed light should remain the same in the medium. I don't see how the frequency of light depends on the rate of disturbance in the EM field (the speed of the passing charge).