Changes

A '''magnetic field''' is a [[vector field]] responsible for generating [[force]]s on electrically charged objects and magnets.  Magnetic fields are generated by magnetic [[dipole]]s, moving [[electric charge]]s, or changing [[electric field]]s.

A '''magnetic field''' is a [[vector field]] responsible for generating [[force]]s on electrically charged objects and magnets.  Magnetic fields are generated by magnetic [[dipole]]s, moving [[electric charge]]s, or changing [[electric field]]s.

Magnetic fields are related to electric fields; together they are part of [[electromagnetism]]. For instance, [[light]] is a propagating electric and magnetic [[wave]].  Relativistically, a magnetic force in one [[inertial frame of reference]] corresponds to an electric force in another.

Magnetic fields are related to electric fields; together they are part of [[electromagnetism]]. For instance, [[light]] is a propagating electric and magnetic [[wave]].  A magnetic force in one [[inertial frame of reference]] could correspond to an electric force, or to some combination of magnetic force and electric force, in another.  This phenomenon is described by [[Maxwell's equations]], and is a consequence of [[relativity]].

==Mathematics==

==Mathematics==