All forces must have force source/carrier. Changes carry electrostatic force.

Electrostatic force connects all charges everywhere all the time. 

Any charge vibrates the rest of charges share some of the vibration force/energy according to distance.

Free electrons synchronized vibrating/oscillation in a conductor, the rest of electrons share some of the vibration force/energy according to distance. But only conductors carry free electrons, able to absorb the energy and tangle at same frequency. 

There is no electric and magnetic fields that propagate at the speed of light, no photon travels at the speed of light, no transverse wave. Maxwell was wrong. http://www.badscience.net/forum/viewtopic.php?f=7&t=41156&start=50