Hello sorry if this is noob question... Its my 1st year! Well we have learn that magnetic fields are created by moving charges, current loop or straight conductor. I realised that in some frames of reference, the magnetic field will not exist, rather it is replace entirely by an electric field. I also know magnetic fields cannot be isolated and therefore as far as i know there are no fundamental "magnetic" particles. but I have heard of magnetic monopoles. I also learned that magnetic fields in all materials are actually created by small "current loops" or moving charge interactions between atoms. Does this mean magnetic fields do not exist, or are a simplification of complex dynamic electric interactions, which can be simplified by changing your frame of reference?