The invention relates to a generic counteract unit for an electromagnetically-countered system and various structures counteracting a harmful wave via the counteracting unit. The invention also relates to various methods counteracting the harmful wave via a counter wave, and provides various methods of the counteracting unit and the counter wave. The invention further relates to various techniques of the system, the counteracting unit of the system, etc. Various electricity and/or magnetic fields in the systems and methods can be independently applied or applied in combination with the counteracting unit so as to reduce harmful wave radiation of the system to the minimum.
