[pierat]

I thought that too, but things get weird when you try to separate 'electron-magnetism' and photonics.

If you try to understand WHY a metal outer electron shell will shed a photon, you'll come up empty handed. And with electricity, the electrons move around from one side to the other. Except, do they? What exactly happens at an antenna interface?

And why do we call it the EM spectrum, when the actual carriers are photons?

It's the quantum-EM interactions that I think would make Maxwell's explanation why the equations work as they do make more sense. But even simple stuff in RF makes people evoke ideas of 'black magic'.