GeoffreyF: I know the history of electromagnetic field discovery, know some math behind it, know about Maxwell's equations, Lorentz transformations, know history how all these things was found and discovered, know a little how antenna works, not so deep, but I understand basic things. Such as difference between Near Field region and Far Field region, explanation how electron emits and consumes photons, and other things. I can calculate simple antennas, such as half wave dipole or magnetic loop. I can calculate it's impedance for homogeneous environment with known relative permeability and relative permittivity and can imagine how it works. Also know a little how these things are explained in quantum physics but there are a lot of things that I don't understand. I'm not physicist. This is just interest area of physics for me.
Our conversation was started when I told that no one knows what electromagnetic field is. The science provide us with knowledge of it's features and help us to use it. The quantum physics explains that electromagnetic forces are carried with bosons - fundamental particles. Photon is an example of such particle. But it doesn't explains what is behind these bosons.
You said that you know what electromagnetic field is and started to blame me.
But you still not said what you know exactly. Can you explain it please?
So, what is electromagnetic field in your opinion?