1. Tesla mentioned he loved a girl in his younger age, however felt relationship be an obstacle in his research so chose celibacy.
2. Albert Einstein worked with Nikola Tesla before his death. They tried to create invisibility cloak for the USS Eldrige, American warship(The Philadelphia Experiment).
3. He was sleeping only two hours per night plus some short napping if he felt like it. Good he didn’t sleep much, he had time to think more!
4. Smartphones were actually invented by Tesla, at least the idea of smartphones where Tesla described in 1901. to J.P. Morhan his vision of smart communication that we have today.
5. Tesla believed his eyes had changed color from a darker color to gray because his work required so much serious thought.
6. It is thought that Tesla in one of his experiments intercepted a sort of intelligent signal from space, today there is a whole theory about it called “the Black Knight Satellite”.
7. The U.S. government blew up Tesla’s tower at his Long Island lab because they thought German spies were using it for espionage during World War I.
8. Tesla experimented with X-rays and radio waves, developing important ideas and even making a few accidental discoveries thanks to his extravagant experiments.
9. Mark Twain was friends with Tesla and the inventor once tried to help Twain with some problems he was having with constipation.
10. “Money does not represent such a value as men have placed upon it. All my money has been invested into experiments with which I have made new discoveries enabling mankind to have a little easier life.”
11. Tesla worked on the Wardenclyffe Tower (or Tesla Tower), a wireless transmission tower that was never completed.
12. Elon Musk, CEO of Tesla Motors, donated $1 million to help rebuild Tesla’s Wardenclyffe lab.
13. Tesla, Westinghouse and Edison were at the heart of the so called ‘war of the currents’ between alternating current (AC) and direct current (DC) as a means of distributing electrical power.
14. Tesla moved his lab to Colorado Springs in 1899 where he proved the Earth was a conductor, produced artificial lightning and became well known to his neighbors with ambitious electrical experiments that caused booming thunder, rogue sparks and the occasional power outage.
15. Tesla generated millions of volts of electricity during his experiments with high voltage and current in his Colorado Springs lab.
16. In 1891, Tesla became a citizen of the United States
17. Tesla was the vice president of the American Institute of Electrical Engineers between 1892 and 1894.
18. Tesla may have invented the wireless radio, not Marconi.
19. Tesla had a weird obsession with pigeons.
20. While Tesla now may be better known for his various eccentricities than for his genius, his contemporaries respected at one of the most important scientists of his time.