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The document provides an overview of the history and development of television, including early mechanical television, the shift to all-electronic methods, post-war expansion and broadcasting, funding and distribution methods, and ongoing challenges and innovations.

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Yomna Omer
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7 views1 page

Answer

The document provides an overview of the history and development of television, including early mechanical television, the shift to all-electronic methods, post-war expansion and broadcasting, funding and distribution methods, and ongoing challenges and innovations.

Uploaded by

Yomna Omer
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as TXT, PDF, TXT or read online on Scribd
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## Copilot

Certainly! The concept of television emerged from the work of many individuals in
the late 19th and early 20th centuries. Here's a brief overview:
- Mechanical Television:
- Early attempts involved mechanical systems using rotating perforated disks to
scan scenes into time-varying signals.
- Scottish inventor Alexander Bain introduced the facsimile machine in the mid-
19th century.
- Italian priest Giovanni Caselli developed the first practical facsimile
system for telegraph lines.
- English engineer Willoughby Smith discovered the photoconductivity of
selenium in 1873.
- All-Electronic Television:
- Development was interrupted by World War II.
- After the war, all-electronic methods for scanning and displaying images
became standard.
- Color television standards varied across regions, leading to incompatible
signal formats.
- Post-War Expansion:
- Television broadcasting rapidly expanded after World War II.
- It became a mass medium for advertising, propaganda, and entertainment.
- Broadcasting methods included VHF/UHF radio signals, microwave signals from
satellites, and cable transmission.
- Digital television standards replaced analog methods, conserving radio
spectrum bandwidth.
- Funding and Distribution:
- Television broadcasting is funded by advertising revenue,
private/governmental organizations, or license fees.
- Services like cable or satellite are often subscription-based.
- Technical developments (e.g., microwave networks) allow wide geographic
distribution.
- Video recording enables editing and replay.
- Challenges and Innovations:
- Three-dimensional television faced limitations in display methods.
- Ongoing advancements continue to shape TV technology.
For more in-depth information, you can explore Wikipedia's article on the history
of television. 📺🌐

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