Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz and 300 gigahertz. They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves, and received by another antenna connected to a radio receiver. Radio is very widely used in modern technology, in radio communication, radar, radio navigation, remote control, remote sensing and other applications. In radio communication, used in radio and television broadcasting, cell phones, two-way radios, wireless networking and satellite communication among numerous other uses, radio waves are used to carry information across space from a transmitter to a receiver, by modulating the radio signal in the transmitter.
关于Radio
Inspired by the 1996 Sports Illustrated article "Someone to Lean On," the semi-authobiographical films tells the story of a high school coach who took a developmentally challenged man under his wing.
Radio的成就
Both Cuba Gooding Jr. and Alfre Woodard earned a NAACP Image Award for their performances.
您不知道Radio的热门事实
Radio Category.. Outline of radio - The following outline is provided as an overview of and topical guide to radio: Radio – transmission of signals by modulation of electromagnetic waves with frequencies below those of visible light.. Electromagnetic radiation and health - Electromagnetic radiation can be classified into two types: ionizing radiation and non-ionizing radiation, based on the capability of a single photon with more than 10 eV energy to ionize atoms or break chemical bonds.. Radio quiet zone - A radio quiet zone is an area where radio transmissions are restricted in order to protect a radio telescope or a communications station from radio frequency interference.. Media formats.. Advertising by medium.. Infrastructure.. Italian inventions.. British inventions.. Promotion and marketing communications.. Communication.
