• 1493 – Christopher Columbus set out on his second voyage to the Americas.
  • 1818 – The first-ever human blood transfusion was successfully performed.
  • 1838 – The first official tests of the “electric boat vessel” were conducted in Nevada.
  • 1886 – The first comic opera titled Dorothy was staged in London.
  • 1887 – Emile Berliner patented the gramophone.
  • 1906 – Leonardo Torres Quevedo demonstrated the world’s first radio-controlled device — the Telekino.