EM is classified based on the frequency of the oscillation of its wave. From low to high frequency, EM waves are classified as radio waves, microwaves, terahertz radiation, [[infrared]], visible light, [[ultraviolet]], X-rays and gamma rays. | EM is classified based on the frequency of the oscillation of its wave. From low to high frequency, EM waves are classified as radio waves, microwaves, terahertz radiation, [[infrared]], visible light, [[ultraviolet]], X-rays and gamma rays. |