What significant audio/visual development did Baird demonstrate in 1928 or 1929?

Answer

Color television and stereo sound

Baird demonstrated the world's first color television broadcast and the first stereo television broadcast around 1928 or 1929, continuing to refine his mechanical system.

What significant audio/visual development did Baird demonstrate in 1928 or 1929?

#Videos

JOHN LOGIE BAIRD: The Forgotten Father of Television - YouTube

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