The invention of the television was the work of many individuals in the late 19th and early 20th centuries.
Individuals and corporations competed in various parts of the world to deliver a device that superseded previous technology.
This is widely regarded as the first television demonstration in history.
The subject was Baird's business partner Oliver Hutchinson.
In 1911, Boris Rosing and his student Vladimir Zworykin created a system that used a mechanical mirror-drum scanner to transmit, in Zworykin's words, "very crude images" over wires to the "Braun tube" (cathode ray tube or "CRT") in the receiver.
Moving images were not possible because, in the scanner, "the sensitivity was not enough and the selenium cell was very laggy".Although he never built a working model of the system, variations of Nipkow's spinning-disk "image rasterizer" became exceedingly common.Constantin Perskyi had coined the word television in a paper read to the International Electricity Congress at the International World Fair in Paris on August 24, 1900.Baird's system used the Nipkow disk for both scanning the image and displaying it.A bright light shining through a spinning Nipkow disk set with lenses projected a bright spot of light that swept across the subject.Many were compelled to capitalize on the invention and make profit, while some wanted to change the world through visual and audio communication technology.Facsimile transmission systems pioneered methods of mechanically scanning graphics in the early 19th century.The Scottish inventor Alexander Bain introduced the facsimile machine between 18.The English physicist Frederick Bakewell demonstrated a working laboratory version in 1851.The brightness of the neon lamp was varied in proportion to the brightness of each spot on the image.As each hole in the disk passed by, one scan line of the image was reproduced.