What is radio? How to use in English

The word "radio" originates from the Latin word "radius," meaning "spoke of a wheel" or "beam of light." In the early 20th century, the term "radio" was coined to describe a new technology that transmitted energy through waves, similar to the way a wheel's spoke radiates outward from the hub. Guglielmo Marconi, an Italian inventor, is credited with developing the first practical wireless telegraph in the 1890s. The technology used radio waves to transmit Morse code messages over long distances. The term "radio" was chosen because it evoked the idea of energy being transmitted outward, like rays from the center of a wheel. As the technology advanced and television and other forms of broadcasting emerged, the term "radio" became synonymous with wireless communication and entertainment. Today, the word "radio" is widely used to describe a range of devices and services that transmit audio signals through the airwaves.