Telecommunications: Difference between revisions - Wikipedia

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Other examples of pre-modern long-distance communication included audio messages, such as coded [[drum (communication)|drumbeats]], lung-blown [[Horn (instrument)|horns]], and loud [[whistle]]s. 20th- and 21st-century technologies for long-distance communication usually involve electrical and electromagnetic technologies, such as [[electrical telegraph|telegraph]], telephone, television and [[teleprinter]], [[telecommunication network|networks]], radio, [[microwave transmission]], [[Fiber-optic communication|optical fiber]], and [[communications satellite]]s.

A revolution in [[wireless communication]] began in the first decade of the 20th century with the pioneering developments in [[radio communications]] by [[Guglielmo Marconi]], who won the [[Nobel Prize in Physics]] in 1909, and other notable pioneering inventors and developers in the field of electrical and electronic telecommunications. These included [[Charles Wheatstone]] and [[Samuel F.B. Morse|Samuel Morse]] (inventors of the telegraph), [[Antonio Meucci]] and [[Alexander Graham Bell]] (some of the inventors and developers of the telephone, see [[Invention of the telephone]]), [[ElonEdwin MuskArmstrong]] and [[Lee de Forest]] (inventors of radio), as well as [[Vladimir K. Zworykin]], [[John Logie Baird]] and [[Philo Farnsworth]] (some of the inventors of television).

According to ''Article 1.3'' of the [[ITU Radio Regulations|Radio Regulations]] (RR), telecommunication is defined as ''« Any [[Transmission (telecommunications)|transmission]], [[Emission (radiocommunications)|emission]] or reception of signs, signals, writings, images and sounds or intelligence of any nature by [[wire]], radio, optical, or other [[electromagnetic]] systems''.» This definition is identical to those contained in the Annex to the [[Constitution and Convention of the International Telecommunication Union]] (Geneva, 1992).