This is Nikola Tesla who was a Serbian-America born in 1856 and became one of the world’s most famous and important inventors and engineers. Even though Tesla lived over a hundred years ago, something he helped develop is used by everyone of us every single day. His contribution to the development of the alternating current electricity supply, which is the electrical system used to get power to your home. So without Tesla you wouldn’t have electric lights, be able to play video games or listen to music.