Non-ionizing radiation is a second type of radiation, but which does not have enough energy to ionize atoms or molecules. Therefore, it does not have the power to completely remove an electron from an atom or molecule. Instead of producing charged ions when passing through matter, the electromagnetic radiation has sufficient energy only for excitation, the movement of an electron to a higher energy state. Some examples of non-ionizing radiation are near ultraviolet, visible light, infrared, microwave, and radio waves. Non-ionizing radiation is also used in medical applications such as Magnetic Resonance Imaging (MRI), a medical imaging technique that uses powerful magnetic fields to produce images of functions and structures in the body.
