Multiple choice general knowledge math & puzzles

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 (scanning disk), John Logie Baird (mechanical TV), and Charles Francis Jenkins (radiovisor) were all key pioneers in the development of early mechanical television systems before electronic television became the standard.

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