Changing and changing magnetic field constitutes a non-uniform field separated

Electromagnetic wave is a movement patterns. Electricity and magnetism can be said on both sides, a changing electric field generates a magnetic field (ie, the current creates a magnetic field), electric meter field is generated. Electric transformer electric and magnetic field changes in a non-isolated form of the unified field, which is the electromagnetic field, which changes the propagation of the electromagnetic field is formed in the space of electromagnetic waves, electromagnetic change breeze on the water surface as waves in general, it is called electromagnetic waves, often referred to as radio waves.