In field names the narrower specialty an invention sits within inside its wider field. Wikipedia notes a telephone "converts sound... into electronic signals that are transmitted via cables and other communication channels," a specialty of electrical signal transmission inside telecommunications generally. This dimension groups inventions that share the same narrow technical specialty.
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Sources
Technology: A World History
Daniel R. Headrick, Oxford University Press, 2009- Contains: The Telephone
- Contains: The Laser
View the Source A History of Technology
Charles Singer, E. J. Holmyard, A. R. Hall and Trevor I. Williams, editors, Oxford University Press, 1954Contains: The Jet EngineView the Source Encyclopaedia Britannica
Encyclopaedia Britannica editors, Encyclopaedia Britannica, Inc.- Contains: Radio
- Contains: Television
- Contains: The Automobile
- Contains: The Internal Combustion Engine
- Contains: The Computer
- Contains: The Analytical Engine
- Contains: The World Wide Web
View the Source Bi Sheng (Wikipedia)
Wikipedia contributors, Wikimedia FoundationContains: Movable Type PrintingView the Source Reader Challenges (0)
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