Multiple choice general knowledge

What type of system did Paul Nipkow, John Baird, and Charles Jenkins all invent?

  1. Telephone

  2. Early Warning

  3. Electricity

  4. Television
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Paul Nipkow (1884), John Logie Baird (1920s), and Charles Jenkins (1920s) all contributed to the invention of mechanical television systems. Nipkow invented the scanning disk, Baird demonstrated the first working television system, and Jenkins developed early television transmission. Telephone, early warning systems, and electricity itself are different inventions.

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