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  1. Technology, Examples, Devices, & Facts - Britannica

    Nov 23, 2025 · For details on specific applications that utilize telecommunications systems, see the articles telephone, telegraph, fax, radio, and television. Transmission over electric wire, radio wave, …

  2. Communication - Models, Process, Channels | Britannica

    Oct 28, 2025 · Communication - Models, Process, Channels: Fragmentation and problems of interdisciplinary outlook have generated a wide range of discussion concerning the ways in which …

  3. Communication | Definition, Types, Examples, & Facts | Britannica

    Dec 10, 2025 · Communication, the exchange of meanings between individuals through a common system of symbols. This article treats the functions, types, and psychology of communication.

  4. Communication system | technology | Britannica

    Communications systems are of growing significance and complexity in commercial, institutional, and industrial buildings. Thus communications wires for telephones, public-address systems, and …

  5. Telecommunications media | Definition, Types, Examples, Technology ...

    Nov 6, 2025 · Telecommunications media, equipment and systems—metal wire, terrestrial and satellite radio, and optical fibre—employed in the transmission of electromagnetic signals, facilitating mass …

  6. Satellite communication | Definition, History, & Facts | Britannica

    Nov 16, 2025 · Satellite communications play a vital role in the global telecommunications system. Approximately 2,000 artificial satellites orbiting Earth relay analog and digital signals carrying voice, …

  7. Communication - Verbal, Nonverbal, Digital | Britannica

    Dec 10, 2025 · Communication - Verbal, Nonverbal, Digital: Signals, signs, and symbols, three related components of communication processes found in all known cultures, have attracted considerable …

  8. Communications satellite | Orbital Positioning, Data Transfer & Global ...

    Communications satellite, Earth-orbiting system capable of receiving a signal (e.g., data, voice, TV) and relaying it back to the ground. Communications satellites have been a significant part of domestic …

  9. Satellite communication - Orbit, Signals, Relay | Britannica

    Nov 16, 2025 · Satellite communication - Orbit, Signals, Relay: A satellite is basically a self-contained communications system with the ability to receive signals from Earth and to retransmit those signals …

  10. Wireless communications | Mobile Network, Radio Signals & Network ...

    Nov 10, 2025 · Wireless communications, System using radio-frequency, infrared, microwave, or other types of electromagnetic or acoustic waves in place of wires, cables, or fibre optics to transmit …