Nikola Tesla, a Serbian scientest and maybe the greatest genius since Leonardo da Vinci. Few people even know that the man who invented the 20th century even existed. Many of his ideas and inventions were credited by others. Nikola invented X-rays (credited to Roentgen), radio (credited to Marconi), the microwave oven, speedometer, automobile ignition system, basics behind radar, fluorescent bulb, electron microscope, neon lights and on top of all Tesla designed the first hydro-electric power plant in Niagara Falls (invented alternating currents). Tesla's biggest competitor Thomas Edison, did everything to erase Nikola Tesla from the history books and to reject his alternating currents idea. Tesla's ideas were so extreme that scientist community thought he was lunatic and on many occasions laughed at his theories. He believed that both voice and image can be transmitted through the air (in the late 1800's), which was of course true since we have wireless Internet today.