When did paul nipkow invent the television?

Answer 1

Paul Nipkow invented an electromechanical television on December 24, 1883, and a patent on it was granted in 1885. It was further developed in England during the period around 1920, and the first Broadcast Television pictures displayed publicly in England in 1925 used his system. It was not as practical as the electronic scanning used today, however, and went out of use.

Answer 2

Paul Nipkow was an engineer and inventor in the late 19th century. He didn't invent the television and in fact was not working on the transmission of moving images at all. Nonetheless, he made an important contribution to the development of television.

He invented and patented the "Nipkow Disc", a large wheel with a series of holes in it. As the disc rotated in front of a still image, the holes exposed small parts of the image. As the holes were progressively closer to the center of the disc, the whole image would be scanned from one side to the other.

It was John Logie Baird who used the same type of disc to capture a moving image and then display it through another identical disc. In doing so, Baird used the principle of repeatedly scanning a moving scene and displaying it. This principle of television lines has remained in use since his first attempts in 1923 and his first demonstration in 1925.