It's just too abstract for me: A superposition of magnetic and electric fields, right; but... fields "expand" at speed of light radially, so how come photons don't "dissolve" in all directions rather than remain as particles in one direction? If you move your arm from left to right, and then stop it, you've accelerated and decelerated lots of charges in your arm. This theoritically produces photons (electromagnetic radiation), but how many photons? What is the frequency of these photons? Does this make sense?