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radio technology
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Green printed circuit board with various electronic components, including capacitors, resistors, integrated circuits, and connectors, arranged in a dense pattern.
Get amazed as Guglielmo Marconi sends and receive wireless radio message across the Atlantic
How does a radio convert waves into sound?
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radio technology

telecommunication
Written by
Kenneth Reginald Sturley
Professor of Telecommunications, Ahmadu Bello University, Zaria, Nigeria, 1968–71. Chief Engineer, External Broadcasting, British Broadcasting Corporation, London, 1963–68. Author of Radio Receiver...
Kenneth Reginald Sturley
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Britannica Editors
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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•History

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 ionosphere or from a communications satellite. Electromagnetic radiation includes light as well as radio waves, and the two have many properties in common. Both are propagated through space in approximately straight lines at a velocity of about 300,000,000 metres (186,000 miles) per second and have amplitudes that vary cyclically...

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