Posted: Oct 21, 2016 12:12 am
Shrunk wrote:
We could refine the analogy by imagining a universe in which a single magnet exists, and every other object in the universe is composed of material that is not affected by magnetism, so the force can never be observed. Does the magnetic force still exist, nonetheless? Why wouldn't it?
Well, fields are dependent on objects. A magnetic field requires there to be magnetic material.