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George Westinghouse bought rights to the patents on this
motor and made it the basis for the Westinghouse power system at
Niagara Falls.
Tesla's other inventions included the Tesla coil, a
kind of transformer, and he did research on high-voltage electricity
and wireless communication. In 1905, he demonstrated a wireless
remote control boat, while at the same time Marconi was still
transmitting Morse code.
Despite his many patents and genius, he
died poor. Congress declared Tesla the "father of radio", (not
wireless as Marconi was), because Marconi's four tuned circuit radio
used Tesla's 1897 radio patent describing the four tuned stages, two
on input and two on output. To get a sense of electronics in the
1900s, read Tesla, Man Out of Time by Margaret Cheney.
The unit of magnetic field density is named after him.
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