Radio

radionot even television. A radio is a box filled with electronic components that catches radio waves sailing through the air, a bit like a baseball catcher's mitt, and converts them back into sounds your ears can hear. Radio was first developed in the late-19th century and reached the height of its popularity several decades later. Although radio broadcasting is not quite as popular as it once was, the basic idea of wireless communication remains hugely important: in the last few years, radio has become the heart of new technologies such as wireless Internet, cellphones (mobile phones), and RFID (radio frequency identification) chips. Meanwhile, radio itself has recently gained a new lease of life with the arrival of better-quality digital radio sets.