Did u ever try to explain Doppler effect for light in depth, at the photon level ? I'm no scientist. I'm trying to find a visual or mental representation of the doppler effect for electromagnetic waves. There is no medium to vibrate. No way I can understand the phenomenon by making a parallel with sound waves, water waves or some ball throwing analogy, like in all the examples available online. I cannot understand where does the change in frequency of the emitted light come from ? It is not supposed to be a change in photon energy also ? If so, how this loss/gain of energy occurs ? I have a lamp. It emits green light. It starts to "run away" from me, faster and faster. According to Doppler effect theory, the light that I see becomes redder and redder, if I could say so. I find this impossible to explain. The only webpage that contains an explanation relatively close to what I'm searching (or I think I'm searchin') is here (alternative theory website, but pls. bear with the guy, it sounds quite right): Crackpot link deleted. Please read the rules of this site. Is there something wrong with the above view about the phenomenon ? Am I missing something? Is there a possible way of popularizing the Doppler effect for light, in a different manner from the sound wave analogy ?