I was just thinking about electromagnetic fields and magnetostatics. Magnetostatics is the study of magnetic fields where they do not change or very little. I was wondering if a static magnetic field is still considered part of a Electromagnetic field? Since the magnetic field is not changing, then there should be no electric field. However a thought did occur which is that even though the magnetic field may be steady, in reality it can never be in perfect steady state because there is still small changes in the currents and even in the material which created it which cause a change. Even if the changes are over the lifetime of the universe, that is still considered a change, very small but still a change. So from this I assume that there is no such thing as a magnetic field with out a electric field. It is just that in say a bar magnet which does not seem to change, the electric component of the electromagnetic field is very small because there is very little change in the magnetic field. Is the right? That there is and can never be magnetic field without a electric field. It seems to make perfect since now, especially since I read and hear they are both the same thing and create each other but now I think I actually understand it since I started trying to model it in my head. The problem I use to have was how was a magnetic field from a electromagnet can somehow become a electromagnetic field and the answer is it never did, it was always part of it because it always had an electric component.