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NIKOLA TESLA
MASTER OF IMAGINATION
Submitted to
Ray Russell, Course Instructor
EE 155
Prepared by
Thomas Penick, Student
October 14, 1998
TABLE OF CONTENTS
EARLY EXPERIENCES............................................................................................................1
THE ALTERNATING CURRENT SYSTEM.............................................................................2
TESLA’S GIFTS TO ENGINEERING .......................................................................................4
REFERENCES ...........................................................................................................................5
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NIKOLA TESLA
Nikola Tesla was born on July 9/10 (midnight), 1856 in Smiljam, Croatia, to a Serbian family.
His father was an orthodox priest. His mother was unschooled but quite intelligent. Nikola was
a dreamer who loved poetry. He was self-disciplined and compulsive. His principle contribution
to the field of electromagnetic engineering is the discovery of the rotating magnetic field and the
development of the polyphase electrical system [1 p. 161]. Historians credit Tesla with being a
genius because he not only made unique discoveries in electromagnetic engineering but
developed these discoveries into working systems in an area of science that had almost no
existing body of knowledge other than what he himself had uncovered. Pioneering experiments
were also conducted in fluorescent lighting, vacuum tube, radio, robotics, and X-ray technologies
[3 pp. 9-13].
EARLY EXPERIENCES
Circumstances in Nikola’s early life resulted in his imagination being exercised to the extreme.
In his mind, Nikola would see flashes of light and vivid images. These images were not of
imagined subjects, but were familiar scenes. The effect was so intense that it affected his ability
to see. Interestingly, his brother exhibited similar difficulties. To gain relief, Nikola would take
control of his hallucinations by conjuring up his own images—creating his own imaginary world.
He would take imaginary journeys to strange places. These experiences were intense and made
as strong an impression on young Nikola as his real life experiences. He played this game
constantly from early childhood until the age of 17 when he began channeling his thoughts
toward invention [2 p. 11-12].
As an inventor, he was able to eliminate a lot of models, drawings, and experiments by using the
imagination he had developed in childhood to work through the development and trials of a new
idea. He would conduct his first experiments in his imaginary world, noting problems and
making adjustments, thus completing much of the preliminary work before conducting physical
experiments [2 p. 12].
The first commercially generated power was direct current. Although alternating current could
be more efficiently transmitted, it was not used because no satisfactory alternating current motor
had been developed. Tesla pondered this problem for many years. Finally, while walking
through a park in Budapest, the idea came to him in a flash. He conceived of a rotating magnetic
field, created by multiple phases of AC power. This concept would eventually permit him to
develop the first successful AC motor [2 p. 22, 23].
In 1882, Tesla worked at a telegraph office. He invented a telephone amplifier, which he didn’t
bother to patent. In the fall of 1882, he went to Paris to work for an Edison subsidiary. He
worked as a troubleshooter at power plants in France and Germany. He wanted to sell Mr.
Edison on his AC power ideas, but was told that Edison was solidly in favor of DC current over
AC. On his own time, he built his first AC motor [2 p. 24, 25].
In 1884, Tesla immigrated to America, bringing a letter of recommendation addressed to Thomas
Edison. He happened to catch Edison at a time when the inventor desperately needed help
maintaining his many DC electrical systems. Edison sent Tesla immediately to repair dynamos
aboard the SS Oregon. Tesla worked through the night to complete the repairs [2 p. 30-31].
Tesla informed Edison that he could make major improvements in Edison’s DC dynamos.
Edison said if he did, there would be $50,000 in it for him. Tesla worked long hours for almost a
year to complete the redesign. He visited Edison and asked about his $50,000. Edison replied,
“Tesla, you don’t understand our American humor.” Tesla resigned [2 p. 33-34]. America was
entering an economic depression and Nikola Tesla found himself working on a New York street
gang from 1886 to 1887 [2 p. 36].
THE ALTERNATING CURRENT SYSTEM
Finally, Tesla’s foreman took him to meet A. K. Brown, manager of Western Union Telegraph
Co. With Brown’s help, Tesla Electric Co. was formed in April 1887. Tesla patented single-
phase, two-phase, and three-phase AC systems, and two AC motors. In the first four years of
2
operation, he was granted 40 patents. The patents were processed quickly since there was
nothing like them at the patent office. Both scientific and business interests took note of the
patent office activity and Tesla was soon receiving invitations to lecture. He turned out to be a
natural speaker [2 p. 36-39].
George Westinghouse had more than 30 AC power systems in operation at the time (under a
different patent) and was interested in Tesla’s motor. Westinghouse paid Tesla a visit at his lab.
Tesla went to work for Westinghouse and moved to Pittsburgh. Tesla’s motors ran at 60 Hz AC
and could not be adapted to the 133 Hz Westinghouse system. Westinghouse was forced to
switch to 60 Hz and this has become the standard electrical power frequency in the U.S. After
several months in Pittsburgh, Tesla returned to New York [2 p.40]. He became a U.S. citizen on
July 30, 1891, a status which he valued above all scientific honors. In September 1891 he went
to Paris to lecture at the International Exposition and also visited his family in Croatia [2 p. 41].
Edison was outraged when he learned of Tesla’s alliance with Westinghouse. He issued
propaganda about the dangers of AC current. Edison conducted weekly demonstrations in which
dogs and cats were electrocuted. Through a third party, he bought rights to Tesla’s AC patents
and worked a deal with New York prison authorities to carry out the first execution by
electrocution on 8/6/1890. The convict failed to die after the first shock and the ordeal had to be
repeated. It was reported as “an awful spectacle, far worse than hanging [2 p, 41-45].”
George Westinghouse became worn down financially by Edison’s anti-alternating current
initiatives. A major obstacle to the ability of Westinghouse to get new funding was his contract
with Tesla to pay him $2.50 for each horsepower manufactured. George Westinghouse appealed
to Tesla to relinquish his claim to the patents. Tesla, interested in seeing his inventions put to
use, agreed and settled for a cash sum [2 p. 48-49].
Tesla proved to be quite a showman on the lecture circuit. He had glass tubes that glowed
without electrical connections. This was the forerunner of the florescent bulb, another invention
he didn’t bother to patent. He wore insulated shoes and allowed high-voltage, high-frequency
electric current to flow across his body. His purpose in doing this was, in part, to counter
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