On June 21, 1943 the United States Supreme Court reversed itself, granting patent rights to Tesla, not Marconi for the invention of radio.
In 1898, Tesla invented the "Electrical Igniter for Gas Engines." Today it's used in more than 600 million cars worldwide, and is better known at the automobile ignition system.
In 1917 Tesla proposed the concept of radio waves reflecting off objects to determine position and speed. That was 17 years before the invention of radar.
In 1887 Tesla experimented with X-ray radiation. That was eight years before Wilhelm Roentgen documented his own X-ray discovery, which won Roentgen the Nobel Prize in physics.
Narrator: Free worldwide wireless energy, death rays, earthquake machines, remote control and green power, all from the fertile mind of the genius who electrified the world. Now, Nikola Tesla's Mad Electricity, on Modern Marvels.