Publisher :National Council of Science Museums, Kolkata
Description :The invention by Paul Nipkow in 1884 consisting of a disk with holes spiraling into its centre shaped the development of television. John Logie Baird used Nipkow's disk to demonstrate the first Mechanical Television in 1926. The entire system was based on mechanical Scanning of the objects and reproducing the images. Though mechanical television became outdated within fifteen years, it paved the way for development of modern television.
The working principle of a mechanical television is presented in an interactive exhibit 'Mechanical TV: How it Works' in the Television' gallery of Birla Industrial & Technological Museum. Keeping in mind the interactivity and operation of the exhibit by the Visitors in a Science museum setting, a simple and customized approach was adopted in developing the exhibit. The technique of scanning the object was thus done in a different way compared to that used in earlier Mechanical TVs. Here a parallel beam of light from a tailor-made object is first scanned by a Nipkow's disc. It is then collimated by a convex lens with large aperture. The beam is focused on a sensor; where it is picked up, amplified and fed to an electronic circuit. Instead of using a lamp as before a high glow LED is used for reproducing the image on a fluorescent screen.
Description :Includes bibliographical references.
Source :National Council of Science Museums
Type :Article
Received From :National Council of Science Museums
DC Field
Value
dc.contributor.author
Mondal, Abdullah
dc.date.accessioned
2017-06-15T05:51:33Z
dc.date.available
2017-06-15T05:51:33Z
dc.description
Includes bibliographical references.
dc.date.issued
2010-07
dc.description.abstract
The invention by Paul Nipkow in 1884 consisting of a disk with holes spiraling into its centre shaped the development of television. John Logie Baird used Nipkow's disk to demonstrate the first Mechanical Television in 1926. The entire system was based on mechanical Scanning of the objects and reproducing the images. Though mechanical television became outdated within fifteen years, it paved the way for development of modern television.
The working principle of a mechanical television is presented in an interactive exhibit 'Mechanical TV: How it Works' in the Television' gallery of Birla Industrial & Technological Museum. Keeping in mind the interactivity and operation of the exhibit by the Visitors in a Science museum setting, a simple and customized approach was adopted in developing the exhibit. The technique of scanning the object was thus done in a different way compared to that used in earlier Mechanical TVs. Here a parallel beam of light from a tailor-made object is first scanned by a Nipkow's disc. It is then collimated by a convex lens with large aperture. The beam is focused on a sensor; where it is picked up, amplified and fed to an electronic circuit. Instead of using a lamp as before a high glow LED is used for reproducing the image on a fluorescent screen.
dc.source
National Council of Science Museums
dc.format.extent
165-168p.: col.ill.
dc.format.mimetype
application/pdf
dc.identifier.uri
http://hdl.handle.net/123456789/2523
dc.language.iso
en
dc.publisher
National Council of Science Museums, Kolkata
dc.subject
Television
Mechanical universe (Television program)
Government of India
