Written By: Ryan McCaughey, PhD. Modern wireless technology, including cell phones, cordless phones, Bluetooth devices, Wi-Fi networks, smart utility meters, and radio and TV transmission, rely on radio frequency (RF) fields to communicate. Medical scanners, radar systems and microwave ovens also use radio frequency fields. RF broadly refers to electromagnetic waves oscillating between one hundred thousand times per second (100 kHz) to three hundred billion times per second (300 gigahertz). Cell phones transmit and receive signals in the range 600 megahertz (MHz) to 3 GHz. The intensity of electromagnetic radiation can be expressed as microwatts per square-centimeter (µW/cm2) which refers...
READ ARTICLE