Film and television?

Television developed earlier than film, but due to the limitation of electronic technology, film became the big brother of audio-visual art.

18 17 Swedish scientist Barry discovered the important raw material of TV "selenium";

1873, British electronic scientist joseph may discovered that selenium has the ability to convert light into electricity and radiate images of things through electronic signals, which was the earliest television idea.

1923 Jouahri invented the television camera;

1927 French physicist barthelemian installed the world's first TV set;

1928, a radio station in Tadi, Kannik conducted the first television broadcast in the world;

1929, London, England successfully tried to play silent images through the TV system.

Black and white TV stage: 1929- 1954.

At present, live broadcast is the main method, and we can't get our own independent characters.

Color TV transmission stage: 1955- 1962.

Color improves the fidelity of image information transmitted by TV, and TV has gained independent character.

Multi-network communication stage: from the mid-1960s to the present.

At present, satellite communication is the mainstay, which makes mankind enter the era of keeping pace with electronic images and text symbols.