Is a magnetic field carried by a particle? If two north ends of a magnet are brought together they push apart as if they were two rivers meeting head on and if a north pole and a south pole are brought together it is like two rivers flowing together in the same direction. What are these "rivers" made of? Are they a property of space like gravity may be or are they slowly evaporating as the particles making up the field slowly change the material they emanate from. Sorry if this seems silly but I really don't know what a magnetic field consists of or how it works.