Radio waves are a type of electromagnetic radiation with wavelengths ranging from 300 GHz to 3 kHz. They transmit information over long distances using transmitters and antennas. Radio waves can travel via ground waves or direct waves and are used for radio, television, and other wireless technologies. Television uses radio waves to transmit moving images with or without sound across long distances at the speed of light. Microwaves have short wavelengths measured in centimeters and can penetrate some materials, making them useful for transmitting information and in technologies like radar. Wi-Fi enables wireless internet connectivity over local networks using radio signals at speeds up to 54 megabits per second for common household and office use. Infrared waves fall between the visible and microwave parts of the spectrum and are