1.Nicola Tesla(1856-1943 A.D)
Tesla,who lit the world was born on July 10 1856 in Smiljan,Croatia.He was a man with a immense knowledge in different fields of science and technology.This guy was a cool geek with multilingual personality who could speak 8 languages and can recite a whole book completely just with one reading.
A funny fact about him was that he was celibate his whole life and renowned for his achievements and showmanship,eventually earning him a reputation in popular culture as an archetypal mad scientist.
Tesla generated ac current before Edison knew about charges,Markoni got noble prize for inventing radio using the ideas of tesla.X-rays,RADAR were all devised by Tesla.He had almost developed everything by himself and did not expose any of it finally leading his ideas and inventions either to be copied or stolen.This incredible mind created revolution with his invention and finally lost his life on 1943 A.D.