Radio - Wikipedia
Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates oscillating electrical energy, often characterized as a wave. They can be received b… See more
EtymologyThe word radio is derived from the Latin word radius, meaning "spoke of a wheel, beam of light, ray". It was first applied to communications in 1881 when, at the suggestion of French scientist Ernest Mercadier [… See more
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History of radio - Wikipedia
The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of broadcasting.
Wikipedia · Text under CC-BY-SA licenseRadio broadcasting - Wikipedia
Learn about the history, types, and uses of radio broadcasting, the transmission of audio by radio waves to a public audience. Find out how radio waves are modula…
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Radio | Definition, History, & Facts | Britannica
Learn about radio, a form of sound communication by radio waves, from its invention by Marconi to its role in mass media and culture. Explore the history, technology, and culture of radio …
Invention of radio - Wikipedia
Learn about the history and development of radio communication, from early theories and experiments to wireless telegraphy and telephony. Explore the contributions of scientists and …
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Radio in the United States - Wikipedia
Learn about the history, regulation and services of radio broadcasting in the U.S., from AM and FM to shortwave and Internet. Find out how radio has evolved from a mass medium to a niche …
FM broadcasting - Wikipedia
Position of FM radio in the electromagnetic spectrum. A commercial 35 kW FM radio transmitter built in the late 1980s. It belongs to FM radio station KWNR, in Henderson, Nevada, and …
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Timeline of radio - Wikipedia
Learn about the history of radio, from its origins and developments to its applications and events. Explore the milestones and discoveries of scientists and inventors who contributed to the field …
Amateur radio - Wikipedia
Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and …
Internet radio - Wikipedia
Internet radio. Internet radio, also known as Online radio, web radio, net radio, streaming radio, e-radio and IP radio, is a digital audio service transmitted via the Internet. Broadcasting on the …
Radio - Simple English Wikipedia, the free encyclopedia
Learn about radio, a way to send electromagnetic signals over a long distance, to deliver information from one place to another. Find out the history, uses, and types of radio, and how …
Music radio - Wikipedia
Music radio is a radio format in which music is the main broadcast content. After television replaced old time radio's dramatic content, music formats became dominant in many countries. …
Radio wave - Wikipedia
Radio waves were first predicted by the theory of electromagnetism that was proposed in 1867 by Scottish mathematical physicist James Clerk Maxwell. [5] His mathematical theory, now called …
Radio - Wikipedia
Radio a fost la origine o metodă de transmitere a sunetelor prin unde radio, care prin natura lor sunt unde electromagnetice. Azi se transmit prin radio o largă gamă de semnale diferite, …
About NPR : NPR
Feb 12, 2019 · NPR is an independent, nonprofit media organization that was founded on a mission to create a more informed public. Every day, NPR connects with millions of Americans …
Radio technology | History, Principles, Types, & Facts | Britannica
Oct 25, 2024 · radio technology, transmission and detection of communication signals consisting of electromagnetic waves that travel through the air in a straight line or by reflection from the …
Radio – Wikipedia
Radio är trådlös överföring av signaler genom modulering av elektromagnetiska vågor med frekvenser lägre än det synliga ljusets. Utsändning av radio sker vanligtvis från en sändare …
Радио — Википедија
Радио-таласи путују кроз хомогени простор (ваздух или вакуум) праволинијски, у свим правцима. Уколико постоје дисконтинуитети, као што је јоносфера у Земљиној …
Radio - Broadcasting, Entertainment, History | Britannica
Radio - Broadcasting, Entertainment, History: The Golden Age of American radio as a creative medium lasted, at best, from 1930 to 1955, with the true peak period being the 1940s. Writer …
radio - Wiktionary, the free dictionary
5 days ago · radio (countable and uncountable, plural radios) (uncountable) The technology that allows for the transmission of sound or other signals by modulation of electromagnetic waves. …
Elshinta - Wikipedia bahasa Indonesia, ensiklopedia bebas
Elshinta Radio adalah sebuah jaringan radio nasional di Indonesia yang menyiarkan berita selama 24 jam nonstop dan berpusat di Jakarta.Sesuai dengan format acaranya News and …
Radio con Vos - Wikipedia, la enciclopedia libre
Radio con Vos es una estación de radio argentina que transmite desde la Ciudad Autónoma de Buenos Aires. Historia. Comenzó a transmitir el 9 de marzo de 2015 bajo la licencia que …