How do magnetic fields work, the physics of it? Is it the bumping of

[Garrett G]

electrons in the air or what? I read about magnetic materials having unpaired electrons. Why don't the electrons from the outer rings just fill in the holes from the inner rings? Is it the same reason why the planets don't fall towards the sun... momentum and centripetal force? What does unpaired electrons have to do with the force it exerts outside in the air? What is the mechanical cause of the force exerted on the outside of the unpaired electrons material? The description says it's physics but it's also chemistry.