Telechrome Tube, 1940.

The Scottish inventor John Logie Baird (1888-1946) began experimenting with imaging systems in the early 1920s. In 1924, he succeeded in transmitting outline images over wires, and by 1925 he was able to transmit recognisable human faces. In 1926 he started the world's first television station, which he named '2TV'. Baird continued to develop television during World War II (1939-1945). He used the Telechrome tube to demonstrate both 600 line and 1000 line colour television in the early 1940s.