Multiple choice general knowledge

In his book Twenty thousand League under the Sea author Jules Verne makes reference to a ficticious instrument that Captain Nemo uses for a specific purpose.When the instrument was finally invented the inventor was denied a patent on that. What was the instrument ?

  1. Telescope

  2. Stethoscope

  3. Compass

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

In 'Twenty Thousand Leagues Under the Sea,' Jules Verne described Captain Nemo using a periscope on the Nautilus submarine. When periscopes were actually invented decades later for submarine warfare, the original inventor was denied a patent, as the concept was already published in Verne's fiction.

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