The inventor of multi-phase ac power generation and distribution systems, ac induction motors, radio and of course, the Tesla coil, among other things!
The more I read about this man, the more impressed I get! He was very special, one of the greatest scientists of our time.
To really find out about this great man I recommend looking through the sites listed below. These sites, and many more, can be found on the 'Tesla Coil Ring'
Along with many other units of measurement, the tesla was named after a pioneering scientist, namely our good friend Nikola. (A tesla is a unit of measure of magnetic flux density).