Even though electromagnetism shares with mechanics concept such as energy and momentum. there appear to be a major difference between these two fundamental discipl ine. the laws of mechanics look the same in all inertial frames, but electromagnetism appears to violate the general law. According to MaxwelI's equation, electromagnetic waves propagate at speed C, with no restrictions on the state of the source of detector this suggests the existence of an absolute frame for electromagnet i smEven though electromagnetism shares with mechanics concept such as energy and momentum.there appear to be a major difference between these two fundamental discipline.the laws of mechanics look the same in all inertial frames,but electromagnetism appears to violate the general law.According to Maxwell’s equation,electromagnetic waves propagate at speed C,with no restrictions on the state of the source of detector,this suggests the existence of an absolute frame for electromagnetism