Nikola Tesla
Serbian American scientist Nikola Tesla invented the Tesla coil and alternating-current (AC) electricity, in addition to discovering the rotating magnetic field.
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Engineer and inventor Nikola Tesla designed the alternating-current (AC) electric system, which is the predominant electrical system used across the world today. He also created the “Tesla coil” that is still used in radio technology. Born in modern-day Croatia, Tesla immigrated to the United States in 1884 and briefly worked with Thomas Edison before the two parted ways. The Serbian American sold several patent rights, including those to his AC machinery, to George Westinghouse . Tesla died at age 86 in January 1943, but his legacy lives on through his inventions and the electric car company Tesla that’s named in his honor.
FULL NAME: Nikola Tesla BORN: July 10, 1856 DIED: January 7, 1943 BIRTHPLACE: Smiljan, Croatia ASTROLOGICAL SIGN: Cancer
Tesla was born on July 10, 1856, in the Austrian Empire town of Smiljan that is now part of Croatia.
He was one of five children, including siblings Dane, Angelina, Milka, and Marica. Nikola’s interest in electrical invention was spurred by his mother, Djuka Mandic, who invented small household appliances in her spare time while her son was growing up.
Tesla’s father, Milutin Tesla, was a Serbian orthodox priest and a writer, and he pushed for his son to join the priesthood. But Nikola’s interests lay squarely in the sciences.
Tesla received quite a bit of education. He studied at the Realschule, Karlstadt (later renamed the Johann-Rudolph-Glauber Realschule Karlstadt) in Germany; the Polytechnic Institute in Graz, Austria; and the University of Prague during the 1870s.
After university, Tesla moved to Budapest, Hungary, where for a time he worked at the Central Telephone Exchange. It was while in Budapest that the idea for the induction motor first came to Tesla, but after several years of trying to gain interest in his invention, at age 28, Tesla decided to leave Europe for America.
In 1884, Tesla arrived in the United States with little more than the clothes on his back and a letter of introduction to famed inventor and business mogul Thomas Edison , whose DC-based electrical works were fast becoming the standard in the country. Edison hired Tesla, and the two men were soon working tirelessly alongside each other, making improvements to Edison’s inventions.
Several months later, the two parted ways due to a conflicting business-scientific relationship , attributed by historians to their incredibly different personalities. While Edison was a power figure who focused on marketing and financial success, Tesla was commercially out-of-touch and somewhat vulnerable. Their feud would continue to affect Tesla’s career.
In 1885, Tesla received funding for the Tesla Electric Light Company and was tasked by his investors to develop improved arc lighting. After successfully doing so, however, Tesla was forced out of the venture and, for a time, had to work as a manual laborer in order to survive. His luck changed two years later when he received funding for his new Tesla Electric Company.
Throughout his career, Tesla discovered, designed, and developed ideas for a number of important inventions—most of which were officially patented by other inventors—including dynamos (electrical generators similar to batteries) and the induction motor.
He was also a pioneer in the discovery of radar technology, X-ray technology, remote control, and the rotating magnetic field—the basis of most AC machinery. Tesla is most well-known for his contributions in AC electricity and for the Tesla coil.
AC Electrical System
Tesla designed the alternating-current (AC) electrical system, which quickly became the preeminent power system of the 20 th century and has remained the worldwide standard ever since. In 1887, Tesla found funding for his new Tesla Electric Company, and by the end of the year, he had successfully filed several patents for AC-based inventions.
Tesla’s AC system soon caught the attention of American engineer and businessman George Westinghouse , who was seeking a solution to supplying the nation with long-distance power. Convinced that Tesla’s inventions would help him achieve this, in 1888, he purchased his patents for $60,000 in cash and stock in the Westinghouse Corporation.
As interest in an AC system grew, Tesla and Westinghouse were put in direct competition with Thomas Edison , who was intent on selling his direct-current (DC) system to the nation. A negative press campaign was soon waged by Edison, in an attempt to undermine interest in AC power.
Unfortunately for Edison, the Westinghouse Corporation was chosen to supply the lighting at the 1893 World’s Columbian Exposition in Chicago, and Tesla conducted demonstrations of his AC system there.
Hydroelectric Power Plant
In 1895, Tesla designed what was among the first AC hydroelectric power plants in the United States, at Niagara Falls. The following year, it was used to power the city of Buffalo, New York—a feat that was highly publicized throughout the world and helped further AC electricity’s path to becoming the world’s power system.
In the late 19 th century, Tesla patented the Tesla coil, which laid the foundation for wireless technologies and is still used in radio technology today. The heart of an electrical circuit, the Tesla coil is an inductor used in many early radio transmission antennas.
The coil works with a capacitor to resonate current and voltage from a power source across the circuit. Tesla used his coil to study fluorescence, x-rays, radio, wireless power, and electromagnetism in the earth and its atmosphere.
Wireless Power and Wardenclyffe Tower
Having become obsessed with the wireless transmission of energy, around 1900, Tesla set to work on his boldest project yet: to build a global, wireless communication system transmitted through a large electrical tower that would enable information sharing and provide free energy throughout the world.
With funding from a group of investors that included financial giant J. P. Morgan , Tesla began work on the free energy project in earnest in 1901. He designed and built a lab with a power plant and a massive transmission tower on a site on Long Island, New York, that became known as Wardenclyffe.
However, doubts arose among his investors about the plausibility of Tesla’s system. As his rival, Guglielmo Marconi —with the financial support of Andrew Carnegie and Thomas Edison —continued to make great advances with his own radio technologies, Tesla had no choice but to abandon the project.
The Wardenclyffe staff was laid off in 1906, and by 1915, the site had fallen into foreclosure. Two years later, Tesla declared bankruptcy, and the tower was dismantled and sold for scrap to help pay the debts he had accrued.
After suffering a nervous breakdown following the closure of his wireless power project, Tesla eventually returned to work, primarily as a consultant. But as time went on, his ideas became progressively more outlandish and impractical. He grew increasingly eccentric, devoting much of his time to the care of wild pigeons in the parks of New York City . Tesla even drew the attention of the FBI with his talk of building a powerful “death ray,” which had received some interest from the Soviet Union during World War II.
Poor and reclusive, Tesla died of coronary thrombosis on January 7, 1943, at the age of 86 in New York City, where he had lived for nearly 60 years.
The legacy of Tesla’s work lives on to this day. In 1994, a street sign identifying “Nikola Tesla Corner” was installed near the site of his former New York City laboratory, at the intersection of 40 th Street and 6 th Avenue.
Several movies have highlighted Tesla’s life and famous works, most notably:
- The Secret of Nikola Tesla , a 1980 biographical film starring Orson Welles as J. P. Morgan .
- Nikola Tesla, The Genius Who Lit the World , a 1994 documentary produced by the Tesla Memorial Society and the Nikola Tesla Museum in Belgrade, Serbia.
- The Prestige , a 2006 fictional film about two magicians directed by Christopher Nolan , with rock star David Bowie portraying Tesla.
In 2003, a group of engineers founded Tesla Motors, a car company named after Tesla dedicated to building the first fully electric-powered car. Entrepreneur and engineer Elon Musk contributed over $30 million to Tesla in 2004 and serves as the company’s co-founder and CEO.
Tesla Motors unveiled its first electric car, the Roadster, in 2008. A high-performance sports vehicle, the Roadster helped changed the perception of what electric cars could be. In 2014, Tesla launched the Model S, a lower-priced model that, in 2017, set the MotorTrend world record for 0 to 60 miles per hour acceleration at 2.28 seconds. The company’s designs showed that an electric car could have the same performance as gasoline-powered sports car brands like Porsche and Lamborghini.
Tesla Science Center at Wardenclyffe
Since Tesla’s original forfeiture of his free energy project, ownership of the Wardenclyffe property has passed through numerous hands. Several attempts have been made to preserve it, but efforts to declare it a national historic site failed in 1967, 1976, and 1994.
Then, in 2008, a group called the Tesla Science Center (TSC) was formed with the intention of purchasing the property and turning it into a museum dedicated to the inventor’s work. In 2009, the Wardenclyffe site went on the market for nearly $1.6 million, and for the next several years, the TSC worked diligently to raise funds for its purchase. In 2012, public interest in the project peaked when Matthew Inman of TheOatmeal.com collaborated with the TSC in an Internet fundraising effort, ultimately receiving enough contributions to acquire the site in May 2013.
Wardenclyffe Tower finally joined the National Register of Historic Places in 2018. Work on its restoration is still in progress. A $20 million redevelopment broke ground in April 2023, but those efforts were complicated by large fire that November. The site is closed to the public “for the foreseeable future” for reasons of safety and preservation, according to the Tesla Science Center.
- Our virtues and our failings are inseparable, like force and matter. When they separate, man is no more.
- I do not think you can name many great inventions that have been made by married men.
- The scientists of today think deeply instead of clearly. One must be sane to think clearly, but one can think deeply and be quite insane.
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Nikola Tesla
By: History.com Editors
Updated: March 13, 2020 | Original: November 9, 2009
Serbian-American engineer and physicist Nikola Tesla (1856-1943) made dozens of breakthroughs in the production, transmission and application of electric power. He invented the first alternating current (AC) motor and developed AC generation and transmission technology. Though he was famous and respected, he was never able to translate his copious inventions into long-term financial success—unlike his early employer and chief rival, Thomas Edison.
Nikola Tesla’s Early Years
Nikola Tesla was born in 1856 in Smiljan, Croatia, then part of the Austro-Hungarian Empire. His father was a priest in the Serbian Orthodox church and his mother managed the family’s farm. In 1863 Tesla’s brother Daniel was killed in a riding accident. The shock of the loss unsettled the 7-year-old Tesla, who reported seeing visions—the first signs of his lifelong mental illnesses.
Did you know? During the 1890s Mark Twain struck up a friendship with inventor Nikola Tesla. Twain often visited him in his lab, where in 1894 Tesla photographed the great American writer in one of the first pictures ever lit by phosphorescent light.
Tesla studied math and physics at the Technical University of Graz and philosophy at the University of Prague. In 1882, while on a walk, he came up with the idea for a brushless AC motor, making the first sketches of its rotating electromagnets in the sand of the path. Later that year he moved to Paris and got a job repairing direct current (DC) power plants with the Continental Edison Company. Two years later he immigrated to the United States.
Nikola Tesla and Thomas Edison
Tesla arrived in New York in 1884 and was hired as an engineer at Thomas Edison’s Manhattan headquarters. He worked there for a year, impressing Edison with his diligence and ingenuity. At one point Edison told Tesla he would pay $50,000 for an improved design for his DC dynamos. After months of experimentation, Tesla presented a solution and asked for the money. Edison demurred, saying, “Tesla, you don’t understand our American humor.” Tesla quit soon after.
Nikola Tesla and Westinghouse
After an unsuccessful attempt to start his own Tesla Electric Light Company and a stint digging ditches for $2 a day, Tesla found backers to support his research into alternating current. In 1887 and 1888 he was granted more than 30 patents for his inventions and invited to address the American Institute of Electrical Engineers on his work. His lecture caught the attention of George Westinghouse, the inventor who had launched the first AC power system near Boston and was Edison’s major competitor in the “Battle of the Currents.”
Westinghouse hired Tesla, licensed the patents for his AC motor and gave him his own lab. In 1890 Edison arranged for a convicted New York murderer to be put to death in an AC-powered electric chair—a stunt designed to show how dangerous the Westinghouse standard could be.
Buoyed by Westinghouse’s royalties, Tesla struck out on his own again. But Westinghouse was soon forced by his backers to renegotiate their contract, with Tesla relinquishing his royalty rights.
In the 1890s Tesla invented electric oscillators, meters, improved lights and the high-voltage transformer known as the Tesla coil. He also experimented with X-rays, gave short-range demonstrations of radio communication two years before Guglielmo Marconi and piloted a radio-controlled boat around a pool in Madison Square Garden. Together, Tesla and Westinghouse lit the 1893 World’s Columbian Exposition in Chicago and partnered with General Electric to install AC generators at Niagara Falls , creating the first modern power station.
Nikola Tesla’s Failures, Death and Legacy
In 1895 Tesla’s New York lab burned, destroying years’ worth of notes and equipment. Tesla relocated to Colorado Springs for two years, returning to New York in 1900. He secured backing from financier J.P. Morgan and began building a global communications network centered on a giant tower at Wardenclyffe, on Long Island. But funds ran out and Morgan balked at Tesla’s grandiose schemes.
Tesla lived his last decades in a New York hotel, working on new inventions even as his energy and mental health faded. His obsession with the number three and fastidious washing were dismissed as the eccentricities of genius. He spent his final years feeding—and, he claimed, communicating with—the city’s pigeons.
Tesla died in his room on January 7, 1943. Later that year the U.S. Supreme Court voided four of Marconi’s key patents, belatedly acknowledging Tesla’s innovations in radio. The AC system he championed and improved remains the global standard for power transmission.
HISTORY Vault: The Tesla Files
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Biography Online
Nikola Tesla Biography
Nikola Tesla (1856–1943) was one of the greatest and most enigmatic scientists who played a key role in the development of electromagnetism and other scientific discoveries of his time. Despite his breathtaking number of patents and discoveries, his achievements were often underplayed during his lifetime.
Short Biography Nikola Tesla
Tesla was a bright student and in 1875 went to the Austrian Polytechnic in Graz. However, he left to gain employment in Marburg in Slovenia. Evidence of his difficult temperament sometimes manifested and after an estrangement from his family, he suffered a nervous breakdown. He later enrolled in the Charles Ferdinand University in Prague, but again he left before completing his degree.
During his early life, he experienced many periods of illness and periods of startling inspiration. Accompanied by blinding flashes of light, he would often visualise mechanical and theoretical inventions spontaneously. He had a unique capacity to visualise images in his head. When working on projects, he would rarely write down plans or scale drawings, but rely on the images in his mind.
In 1880, he moved to Budapest where he worked for a telegraph company. During this time, he became acquainted with twin turbines and helped develop a device that provided amplification for when using the telephone.
In 1882, he moved to Paris, where he worked for the Continental Edison Company. Here he improved various devices used by the Edison company. He also conceived the induction motor and devices that used rotating magnetic fields.
With a strong letter of recommendation, Tesla went to the United States in 1884 to work for the Edison Machine Works company. Here he became one of the chief engineers and designers. Tesla was given a task to improve the electrical system of direct current generators. Tesla claimed he was offered $50,000 if he could significantly improve the motor generators. However, after completing his task, Tesla received no reward. This was one of several factors that led to a deep rivalry and bitterness between Tesla and Thomas Edison . It was to become a defining feature of Tesla’s life and impacted his financial situation and prestige. This deep rivalry was also seen as a reason why neither Tesla or Edison was awarded a Nobel prize for their electrical discoveries.
Disgusted that he did not ever receive a pay rise, Tesla resigned, and for a short while, found himself having to gain employment digging ditches for the Edison telephone company.
In 1886, Tesla formed his own company, but it wasn’t a success as his backers didn’t support his faith in AC current.
In 1887, Tesla worked on a form of X-Rays. He was able to photograph the bones in his hand; he also became aware of the side-effects of using radiation. However, his work in this area gained little coverage, and much of his research was later lost in a fire at a New York warehouse.
“The scientific man does not aim at an immediate result. He does not expect that his advanced ideas will be readily taken up… His duty is to lay the foundation for those who are to come, and point the way.”
– Nikola Tesla, Modern Mechanics and Inventions (July 1934)
In 1891, Tesla became an American citizen. This was also a period of great advances in electrical knowledge. Tesla demonstrated the potential for wireless energy transfer and the capacity for AC power generation. Tesla’s promotion of AC current placed him in opposition to Edison who sought to promote his Direct Current DC for electric power. Shortly before his death, Edison said his biggest mistake was spending so much time on DC current rather than the AC current Tesla had promoted.
In 1899, Tesla moved to Colorado Springs where he had the space to develop high voltage experiments. This included a variety of radio and electrical transmission experiments. He left after a year in Colorado Springs, and the buildings were later sold to pay off debts.
In 1900, Tesla began planning the Wardenclyffe Tower facility. This was an ambitious project costing $150,000, a fortune at the time.
In 1904, the US patent office reversed his earlier patent for the radio, giving it instead to G. Marconi . This infuriated Tesla who felt he was the rightful inventor. He began a long, expensive and ultimately unsuccessful attempt to fight the decision. Marconi went on to win the Nobel Prize for physics in 1909. This seemed to be a repeating theme in Tesla’s life: a great invention that he failed to personally profit from.
Nikola Tesla also displayed fluorescent lamps and single node bulbs.
Tesla was in many ways an eccentric and genius. His discoveries and inventions were unprecedented. Yet, he was often ostracised for his erratic behaviour (during his later years, he developed a form of obsessive-compulsive behaviour). He was not frightened of suggesting unorthodox ideas such as radio waves from extraterrestrial beings. His ideas, lack of personal finance and unorthodox behaviour put him outside the scientific establishment and because of this, his ideas were sometimes slow to be accepted or used.
“All that was great in the past was ridiculed, condemned, combated, suppressed — only to emerge all the more powerfully, all the more triumphantly from the struggle.”
– Nikola Tesla, A Means for Furthering Peace (1905)
Outside of science, he had many artistic and literary friends; in later life he became friendly with Mark Twain , inviting him to his laboratory. He also took an interest in poetry, literature and modern Vedic thought, in particular being interested in the teachings and vision of the modern Hindu monk, Swami Vivekananda . Tesla was brought up an Orthodox Christian, although he later didn’t consider himself a believer in the true sense. He retained an admiration for Christianity and Buddhism.
“For ages this idea has been proclaimed in the consummately wise teachings of religion, probably not alone as a means of insuring peace and harmony among men, but as a deeply founded truth. The Buddhist expresses it in one way, the Christian in another, but both say the same: We are all one.”
– Nikola Tesla, The Problem of Increasing Human Energy (1900)
As well as considering scientific issues, Tesla was thoughtful about greater problems of war and conflict, and he wrote a book on the subject called A Means for Furthering Peace (1905). This expressed his views on how conflict may be avoided and humanity learn to live in harmony.
“What we now want most is closer contact and better understanding between individuals and communities all over the earth and the elimination of that fanatic devotion to exalted ideals of national egoism and pride, which is always prone to plunge the world into primeval barbarism and strife.”
– Nikola Tesla, My Inventions (1919)
Personal life
Tesla was famous for working hard and throwing himself into his work. He ate alone and rarely slept, sleeping as little as two hours a day. He remained unmarried and claimed that his chastity was helpful to his scientific abilities. In later years, he became a vegetarian, living on only milk, bread, honey, and vegetable juices.
Tesla passed away on 7 January 1943, in a New York hotel room. He was 86 years old.
After his death, in 1960 the General Conference on Weights and Measures named the SI unit of magnetic field strength the Tesla in his honour.
Citation: Pettinger, Tejvan . “ Biography of Nikola Tesla” , Oxford, UK – www.biographyonline.net . Last updated 25th September 2017
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Key Inventions of Nikola Tesla
- Development in electromagnetism
- Theoretical work on Alternating Current (AC)
- Tesla Coil – magnifying transmitter
- Polyphase system of electrical distribution
- Patent for an early form of radio
- Wireless electrical transfer
- Devices for lightning protection
- Concepts for electrical vehicles
Important contributions in
- Early models of radar
- Remote control
- Nuclear physics
Related pages
Inventions that changed the world – Famous inventions that made a great difference to the progress of the world, including aluminium, the telephone and the printing press.
External pages
- Tesla Museum
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Life And Legacy Of Nikola Tesla
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