Essay: Communications Trace the History

Pages: 2 (623 words)  ·  Bibliography Sources: 2  ·  Level: College Junior  ·  Topic: Communication - Journalism  ·  Buy This Paper

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[. . .] Following its invention in the late 19th century, radio was used for communication, and over time it became used for entertainment as well (Regal). This paper charts the progression from the discovery of the electromagnetic spectrum to radio broadcasting and the creation of news networks.

The electromagnetic spectrum was first invented by James Clark Maxwell, who discovered a connection between electricity and magneticism. Heinrich Rudolf Hertz then established electric circuits producing electromagnetic radiation that were identified by circuits at a great distance. Gugliems Marcini created long-distance radio transmission. This transmitted messages without needing to connect any wires, enabling one to send signals across the Atlantic; the foundation was also established for modern radio, and radio broadcasting companies were created. William S. Paley built CBS to prominence; he understood the importance of advertising and transformed radio into an entertainment medium. Another influential figure was Lee deforest, who invented the Audion, a vacuum that strengthened weak electromagnetic signals. Additional developments in radio broadcasting included the contribution of Edwin Howard Armstrong; he invented fm radio, which varied radio wave frequency, assisting in the transmission and reception of audio range frequency. The contributions of David Sarnoff were also crucial; he was head of radio broadcasting at RCA, and established AM radio. He was also a pioneer in the shift from transmission of information to establishing radio as entertainment. He understood that the value of a broadcast network depends on the number of its viewers. Thus, there is a clear and direct lineage from the early discovery of the electromagnetic spectrum to the more news and entertainment-centric forms of radio broadcasting that developed over time.

Works Cited

Regal, Brian. Radio: The Life Story of a Technology. Westport: Greenwood Press, 2001. Print.

Schudson, Michael. "The Objectivity Norm in American Journalism." Journalism 2.2 (Aug.…

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