Complete the sentence about Wolfgang Kempelen with the correct year: In ______, he published a book containing his nearly twenty years of speech research, Mechanismus der menschlichen Sprache Nebst Beschreibung seiner sprechenden Maschine.

Answer and explanation

Correct answer: C. 1789

Wolfgang Kempelen was a Hungarian writer, architect and inventor, famous for the chess-playing Turk hoax and for his speaking machine. In 1789 he published a book summing up nearly twenty years of speech research, Mechanismus der menschlichen Sprache Nebst Beschreibung seiner sprechenden Maschine.

Practise more Science Arts And Culture.

Free questions with an explanation for every one, and full timed General Knowledge (Slovakia) mock tests.