Quoted: Nikola Tesla did it, just for fun. I heard when that guy died the .gov raided his house and took everything he was working on and it is still sealed up.
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He did things that haven't been replicated to this day.
I read that Byrd was on an expedition to the Arctic and Tesla was going to send him a "message" of some sort.
He sent it, Byrd didn't see anything, but when Tesla learned of the Tunguska (sp?) event he disassembled his equipment.
BTW, as a side note, we can thank Tesla for our AC power grid. Edison was a fan of DC, but it doesn't transmit well over long distances. Tesla worked for Edison, but couldn't convince him to go with AC.
Edison frustrated Tesla. He saw Edison as a tinkerer rather than a scientist. Look at how many attempts were made before Edison had a working light bulb. Tesla would sit down and do intense design work, then build something that worked, rather than endless trial and error.
Westinghouse built air brakes for trains. To get at Edison, Tesla sold his AC patents to Westinghouse for a pittance, and that's how Westinghouse got into the electricity business.