television, transmission and reception of still or moving images by means of electrical signals, originally primarily by means of electromagnetic radiation using the techniques of radio, now also by fiber-optic and coaxial cables and other means. Television has become a major industry, especially in the industrialized nations, and a major medium of communication and source of home entertainment. Television is put to varied use in industry, e.g., for surveillance in places inaccessible to or dangerous for human beings; in science, e.g., in tissue microscopy (see microscope); in medicine, e.g., in endoscopic surgery (see endoscope); and in education.
Sections in this article:
- Evolution of the Scanning Process
- Development of Color Television
- Broadcast, Cable, and Satellite Television Transmission
- Development of the Television Camera and Receiver
- Television Technology Innovations
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
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