Radio radiation, also known as electromagnetic radiation, refers to the transfer of energy through waves. This type of radiation can be emitted by a variety of sources including radio and television stations, cellular phones, and Wi-Fi routers. Synonyms for radio radiation include electromagnetic waves, radio waves, and electromagnetic radiation. Electromagnetic waves are classified by their frequency and include many types of radiation such as microwaves, visible light, X-rays and gamma rays. It is important to note that while radio radiation can transmit information wirelessly, and it is not necessarily harmful, exposure to high levels of radio radiation can have negative health effects. Therefore, it is important to practice safety measures like reducing time spent around radio emitting devices.