who invented the mechanical television? (John Logie Baird)

Who invented the mechanical television? Google celebrates the 90th anniversary of mechanical television with a Google Doodle on January 26, 2016.
Google publish a video about the invention if the mechanical television on January 26th of 2016. They already published exactly the same Google Doodle .
Who invented the mechanical television? 누가 TV를 발명했을까요? ¿Quién inventó la televisión mecánica? Qui a inventé la télévision mécanique? Ki találta fel .
who invented the mechanical television? (John Logie Baird) who invented the mechanical television? (John Logie Baird) who invented the mechanical .