Useful Facts EMF stands for Electric and Magnetic Fields. They are invisible areas on energy, often referred to as radiation, that are associated with the use of electrical power and various forms of natural and man-made lighting. EMF's are produced by microwaves, ovens, computers, visible light, smart meters, WIFI cell phones, blue tooth, power lines and MRIs. EMFs are high frequency - higher visible light toning radiation, UV, X-rays and Gamma rays. Did you know? You should