Real Life Working Technology

Television also known as TV is a telecommunication medium for transmitting and receiving moving images that can be monochrome or coloured, with or without accompanying sound. 

History.

In the early stage, television employed a combination of optical, mechanical and electronic technologies to capture, transmit and display a visual image. The first images transmitted electrically were sent by early mechanical fax machines.

1878 - The concept of electrically powered transmission of television images in motion was first sketched.

1881 - Idea of using scanning to transmit images was put practical use.

1884 - Paul Gottlieb Nipkow, patented the first electromechanical television system which employed a scanning disk.

1907 - Russian scientist Boris Rosing became the first inventor to use a CRT in the receiver of an experimental television system.

1926 - Hungarian engineer Kalman Tihanyi designed a television system utilizing fully electronic scanning and display elements.

1927 - Herbet E. Ives of Bell Labs transmitted moving images from 50-aperature disk producing 16 frames per minute over a cable from Washington,DC to New York City and via radio from Whippany,New Jersey.

1927 - Philo Farnsworth made the world's first working television system with electronic scanning of both the pickup and display devices.

1936 - Olympic Game in Berlin were carried by cable to television stations for the public watch the game.

Late 1936 - BBC began transmitting the world' first public regular HD service.

1936 - Kalman Tihanyi described the principle of plasma display, the first flat panel display system.

HOW TV WORKS?

TYPES OF TV:

• Cathode Ray Tube (CRT).
• Rear Projection.
• Front Projection.
• Plasma
• Liquid Crystal Display (LCD).

ADVANTAGES:

• It enables people to share cultural experiences with others.
• Shared viewing gives family members of all ages an opportunity to spend time together.
• To gain more knowledge by knowing other country culture, language, places and etc.
• Viewer has a variety to choose from.

DISADVANTAGES:

• Less Exercise.
• Don't want to talk and communicate with other.
• Some variety shows bad effect with bad to young people.
• Learn unnecessary things.
• Can damage to eyesight if watch constantly.
• Expensive every 6 months because technology are upgrading in every seconds.