A bit of a late correction, but tesla did not invent the incandescent light bulb, and neither did Edison. The incadescent lamp had been invented by many people prior to Edison and the british inventor Joseph Swan. What Edison and Swan did, was that they improved the old versions of the bulbs to such extent, that they were commercially practical and viable.
Like I said, HATER ON THE LOOSE!
@cikat2 Yes, I love it very much :D
Correction, TESLA'S lightbulb. Edison stole the product from Tesla and countless other inventions from Tesla.