From: utzoo!decvax!wivax!linus!allegra!don
Newsgroups: net.physics
Title: Tesla
Article-I.D.: allegra.1330
Posted: Sun May  8 21:50:11 1983
Received: Wed May 11 08:17:24 1983

Subject:  Tesla and AC

Yes, Tesla invented the polyphase motor which he sold to Westinghouse.
That was a good ten years or so before he began playing with High
frequency current, so the Tesla coil really had nothing to do with
that.

Tesla is also acknowleged as one of the first people to use tuned
coupled circuits in wireless telegraphy.  In a long series of court
battles that eventually overturned Marconi's patents, Tesla and an
American inventer named Stone were both credited with inventing the
items that Marconi (who was a really somewhat of a crook by the way)
had claimed.  (Imagine the mess if Henery Ford had patented the
automobile.  The situation was similar.)

Radio was one of those ideas whose time had come.  So many people
invented wireless telegraphy at the same time its hard to tell who
deserves credit.  I think most people now agree that Lodge in England
and Popov (sp?) in Russia were the earliest workers.