If you don’t know who Tesla is, he’s the handsome chap in the photo and he was an inventor. In fact, there’s an 99% chance that you have interacted with one of his inventions within the last three minutes. And even though I just pulled that figure out of my posterior, it’s probably true.
Best known for his work with Alternating Current (as opposed to Direct Current), Tesla also made breakthroughs in x-rays, radio, and even a death ray weapon. Seriously.
Given his contributions to science and his understanding of technology decades in advance of its realization, I think it is entirely likely that Tesla is out there somewhere right now and that his “death” was a ruse.
But honestly, I could never do as good of a job of telling you who Tesla was as this comic created by The Oatmeal. For those sensitive to foul language, browse with care.