Broadcasting | Definition, History, Types, Systems, Examples,
The use of long-distance wire telephone lines in 1922 to connect a radio station in New York City with one in Chicago to broadcast a description of a gridiron football game introduced a new …
Radio technology | History, Principles, Types, & Facts - Britannica
2024年12月20日 · Radio technology, transmission and detection of communication signals consisting of electromagnetic waves that travel through the air in a straight line or by reflection …
Television | History, Components, & Uses | Britannica
4 天之前 · Television (TV), the electronic delivery of moving images and sound from a source to a receiver. Conceived in the early 20th century, television is a vibrant broadcast medium, using …
Broadcasting - Radio, TV, Satellite | Britannica
Broadcasting - Radio, TV, Satellite: Most observers recognize that no broadcast organization can be wholly independent of government, for all of them must be licensed in accordance with …
HDTV | Definition, Meaning, Resolution, & Facts | Britannica
2025年1月3日 · HDTV—broadcast by cable or satellite or over the ultrahigh frequency portion of public airwaves at a bandwidth of 6 megahertz (MHz)—offers video resolutions as high as …
Broadcasting - Educational, Radio, TV | Britannica
Educational programming accounts for about 4 percent of radio time and 18 percent of television output, the majority of which is broadcast to schools and kindergartens. The Canadian …
Description, History, Technology, & Concerns - Britannica
The first media players capable of livestreaming over the Internet were developed in the early 1990s. Some of the earliest events to be livestreamed were music concerts and a baseball …
telecommunications network - Encyclopedia Britannica
A wired local area network (LAN), for example, may be set up as a broadcast network, with one user connected to each node and the nodes typically arranged in a bus, ring, or star topology, …
Radio | Definition, History, & Facts | Britannica
Radio, sound communication by radio waves, usually through the transmission of music, news, and other types of programs from single broadcast stations to multitudes of individual listeners …
Satellite communication - Global, Navigation, Broadcasting
2024年12月2日 · Satellite communication - Global, Navigation, Broadcasting: Advances in satellite technology have given rise to a healthy satellite services sector that provides various …