Like inventions of Alternating Current! Invention of wireless radios and the development wireless energy, x-rays, artificial lightning, hydroelectric power stations, turbines, particle beam weapons, solar-powered engines, missile science, remote sensing technology, Flying chess, cosmic rays, radar systems... and so on. From these names alone, you can tell just how awesome Nicolas Tesla really is!
If you place this on a person in today's world who knows about these domains, you could call him a genius! And the other party lived during the turn of the 19th and 20th century... In an era where even the steam engine had just been invented not long ago, for Tesla to have researched these things can only be described as awe-inspiring, right?
"You found out what Nicolas Tesla means?" When Finn Lewis regained his senses, many ideas sprang to mind.
