montadhar said:
I stumbled upon this article, and would like to know how close to reality it is.
http://theoatmeal.com/comics/tesla
Most importantly, I would like to know whether he made all the inventions listed before the known inventors did.
That "article" is full of flaws and misinformation. For example: Tesla did not invent AC. Alternating current is the natural consequence of generating electricity by rotating a coil between the poles of a magnet, and that was discovered long before Tesla. In fact, it took some engineering to make a generator produce DC, which was accomplished by the use of commutators. Making AC was easy. Making DC was the original problem people sought to solve.
Tesla's contribution was to figure out ways to use AC, as it was naturally generated, to power motors, and also as the basis of a long distance, high voltage (compared to DC) energy distribution system. He patented his ideas, and they sat doing nothing until George Westinghouse went looking through patents with the hope of developing an AC system to rival Edison's incipient DC system. There were many AC patents besides Tesla's, mind you. He wasn't the only inventor who saw it's potential. Westinghouse approached Tesla because Tesla's patents were the best developed and covered the widest range of inventions for AC.
Westinghouse was the force that went up against Edison, not Tesla. Tesla engineered the 'weapons' so to speak, but Westinghouse fought the electrical war, and ultimately demonstrated AC was a much better system. Tesla didn't have the business sense or organizational capability to create and run a company that could rival Edison.
Anyway, the oft repeated notion that Tesla
invented AC is incorrect. He neither invented nor discovered it.
I saw about 40 other assertions in that "article" that need correcting, but it would take pages. If you're really interested there are many biographies of Tesla and Edison (and Westinghouse, too).