Electromagnetic waves is a type of wave that moves without relying on intermediaries. Based on the induction between the magnetic and electric, which change all the time. The direction of the two perpendicular directions perpendicular to each other, and the movement .
The study also found that electromagnetic waves, the frequency range is unique, it has a different call sign. To sort from low frequency to high frequency is as follows: radio waves, microwaves, infrared rays of light that the eye sees ultraviolet rays and x-rays , gamma rays electromagnetic frequency ranges, all consecutive , calledelectromagnetic spectrum .