John Logie Baird

John Logie Baird (b. August 13, 1888, d. June 14, 1946) of Scotland
(University of Glasgow) was the first to invent a working system of
television capable of showing moving images with shades of grey. Baird
demonstrated his system to the Royal Institution and a reporter from The
Times on January 26, 1926 in the Soho district of London.

From 1929 onwards, the BBC made broadcasts using the Baird television
system, alternating these with broadcasts of electronic scanning system
television signals during the 1930s, until it finally discontinued
broadcasts of the Baird system in 1937.

Baird's mechanical television system was replaced by the electronic
television system described by A.A. Campbell-Swinton and later developed by
inventors such as Philo T. Farnsworth and Vladimir Zworykin.