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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.

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he Earthquake Machine

In 1893, Tesla patented a steam-powered mechanical oscillator that would vibrate up and down at high speeds to generate electricity. Years after patenting his invention he told reporters that one day while attempting to tune his mechanical oscillator to the vibration of the building housing his New York City laboratory, he caused the ground to shake. During the test, Tesla continuously turned up the power and heard cracking sounds. “Suddenly,” he recalled, “all the heavy machinery in the place was flying around. I grabbed a hammer and broke the

machine. The building would have been down about our ears in another few minutes.” Police and ambulances arrived on the scene to attend to the commotion, but Tesla told his assistants to remain quiet and tell the police that it must have been an earthquake.

Thought camera

Tesla believed it could be possible to photograph thoughts. The inspiration came while he was doing experiments in 1893, Tesla told a newspaper reporter decades later: “I became convinced that a definite image formed in thought must, by reflex action, produce a corresponding image on the retina, which might possibly be read by suitable apparatus.” The inventor conceived of reflecting an image on an artificial retina, taking a photograph and projecting the image on a screen. “If this can be done successfully, then the objects imagined by a person would be clearly reflected on the screen as they are formed,” he said, “and in this way every thought of the individual could be read. Our minds would then, indeed, be like open books.”

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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 horse 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.

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.
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Part 2 : Tesla's inventions

The Tesla Coil

Among his numerous innovations, Nikola Tesla dreamed of creating a way to supply power to the world without stringing wires across the globe. The inventor came close to accomplishing this when his "mad scientist" experiments with electricity led to his creation of the Tesla coil.

The first system that could wirelessly transmit electricity was the Tesla coil, a truly revolutionary invention. Early radio antennas and telegraphy used the invention, but variations of the coil can also do things that are just plain cool — like shoot lightning bolts, send electric currents through the body, and create electron winds.

AC Current

Most students of electricity begin their study with what is known as direct current (DC), which is electricity flowing in a constant direction, and/or possessing a voltage with constant polarity. DC is the kind of electricity made by a battery (with definite positive and negative terminals), or the kind of charge generated by rubbing certain types of materials against each other.

Alternating Current vs Direct Current

As useful and as easy to understand as DC is, it is not the only “kind” of electricity in use. Certain sources of electricity (most notably, rotary electromechanical generators) naturally produce voltages alternating in polarity, reversing positive and negative over time. Either as a voltage switching polarity or as a current switching direction back and forth, this “kind” of electricity is known as Alternating Current (AC): Figure below

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Nikola Tesla - Inventions, Facts & Death

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Serbian-American engineer and physicist Nikola Tesla made dozens of breakthroughs in the production, transmission and application of electric power.

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The street sign "Nikola Tesla Corner" was recently placed on the corner of the 40th Street and 6th Avenue in Manhattan. There is a large photo of Tesla in the Statue of Liberty Museum. The Liberty Science Center in Jersey City, New Jersey has a daily science demonstration of the Tesla Coil creating a million volts of electricity before the spectators eyes. Many books were written about Tesla : Prodigal Genius: The Life of Nikola Tesla by John J. O'Neilland Margaret Cheney's book Tesla: Man out of Time has contributed significantly to his fame. A documentary filmNikola Tesla, The Genius Who Lit the World, produced by the Tesla Memorial Society and the Nikola Tesla Museum in Belgrade,The Secret of Nikola Tesla (Orson Welles), BBC Film Masters of the Ionosphere are other tributes to the great genius.

Nikola Tesla was born on July 10, 1856 in Smiljan, Lika, which was then part of the Austo-Hungarian Empire, region of Croatia. His father, Milutin Tesla was a Serbian Orthodox Priest and his mother Djuka Mandic was an inventor in her own right of household appliances. Tesla studied at the Realschule, Karlstadt in 1873, the Polytechnic Institute in Graz, Austria and the University of Prague. At first, he intended to specialize in physics and mathematics, but soon he became fascinated with electricity. He began his career as an electrical engineer with a telephone company in Budapest in 1881. It was there, as Tesla was walking with a friend through the city park that the elusive solution to the rotating magnetic field flashed through his mind. With a stick, he drew a diagram in the sand explaining to his friend the principle of the induction motor. Before going to America, Tesla joined Continental Edison Company in Paris where he designed dynamos. While in Strassbourg in 1883, he privately built a prototype of the induction motor and ran it successfully. Unable to interest anyone in Europe in promoting this radical device, Tesla accepted an offer to work for Thomas Edison in New York. His childhood dream was to come to America to harness the power of Niagara Falls.
The Century Magazine published Tesla's principles of telegraphy without wires, popularizing scientific lectures given before Franklin Institute in February 1893. The Electrical Review in 1896 published X-rays of a man, made by Tesla, with X-ray tubes of his own design.They appeared at the same time as when Roentgen announced his discovery of X-rays.Tesla never attempted to proclaim priority.Roentgen congratulated Tesla on his sophisticated X-ray pictures, andTesla even wrote Roentgen's name on one of his films.He experimented with shadowgraphs similar to those that later were to be used by Wilhelm Rontgen when he discovered X-rays in 1895.Tesla's countless experiments included work on a carbon button lamp, on the power of electrical resonance, and on various types of lightning.Tesla invented the special vacuum tube which emitted light to be used in photography. In 1896 Tesla constructed an instrument to receive radio waves.He experimented with this device and transmitted radio waves from his laboratory on South 5th Avenue. to the Gerlach Hotel at 27th Street in Manhattan.The device had a magnet which gave off intense magnetic fields up to 20,000 lines per centimeter.The radio device clearly establishes his piority in the discovery of radio. In December 1901, Marconi established wireless communication between Britain and the Newfoundland, Canada, earning him the Nobel prize in 1909.But much of Marconi's work was not original.In 1864, James Maxwell theorized electromagnetic waves.In 1887, Heinrich Hertz proved Maxwell's theories.Later, Sir Oliver Logde extended the Hertz prototype system.The Brandley coherer increased the distance messages could be transmitted.The coherer was perfected by Marconi. Nikola Tesla was one of the most celebrated personalities in the American press, in this century.According to Life Magazine's special issue of September, 1997, Tesla is among the 100 most famous people of the last 1,000 years.He is one of the great men who divert the stream of human history.Tesla's celebrity was in its height at the turn of the century.His discoveries, inventions and vision had widespread acceptance by the public, the scientific community and American press.Tesla's discoveries had extensive coverage in the scientific journals, the daily and weekly press as well as in the foremost literary and intellectual publications of the day.He was the Super Star. Tesla wrote many autobiographical articles for the prominent journal Electrical Experimenter, collected in the book, My Inventions.Tesla was gifted with intense powers of visualization and exceptional memory from early youth on.He was able to fully construct, develop and perfect his inventions completely in his mind before committing them to paper. In 1915, a New York Times article announced that Tesla and Edison were to share the Nobel Prize for physics.Oddly, neither man received the prize, the reason being unclear.It was rumored that Tesla refused the prize because he would not share with Edison, and because Marconi had already received his.

(Tesla's friend Mark Twain, famous American writer)

On his 75th birthday in 1931, the inventor appeared on the cover of Time Magazine. On this occasion, Tesla received congratulatory letters from more than 70 pioneers in science and engineering including Albert Einstein. These letters were mounted and presented to Tesla in the form of a testimonial volume.
In his speech presenting Tesla with the Edison medal, Vice President Behrend of the Institute of Electrical Engineers eloquently expressed the following:"Were we to seize and eliminate from our industrial world the result of Mr. Tesla's work, the wheels of industry would cease to turn, our electric cars and trains would stop, our towns would be dark and our mills would be idle and dead.His name marks an epoch in the advance of electrical science."Mr. Behrend ended his speech with a paraphrase of Pope's lines on Newton:"Nature and nature's laws lay hid by night.God said 'Let Tesla be' and all was light." "The world will wait a long time for Nikola Tesla's equal in achievement and imagination."E. ARMSTRONG Nikola Tesla's Awards and Recognition
-Dr.Ljubo Vujov ic
Secretary General, New York HOME

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The street sign "Nikola Tesla Corner" was recently placed on the corner of the 40th Street and 6th Avenue in Manhattan. There is a large photo of Tesla in the Statue of Liberty Museum. The Liberty Science Center in Jersey City, New Jersey has a daily science demonstration of the Tesla Coil creating a million volts of electricity before the spectators eyes.

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"It seems that I have always been ahead of my time," Serbian-American engineer and physicist Nikola Tesla once mused. While the eccentric inventor pioneered advances in radio, television, motors, robotics and electricity-including the alternating-current technology that's widely used today-he also proposed more outlandish ideas. The following six futuristic visions of his have yet to come to fruition, either because of limitations of technology or market viability.

1. Earthquake Machine

In 1893, Tesla patented a steam-powered mechanical oscillator that would vibrate up and down at high speeds to generate electricity. Years after patenting his invention he told reporters that one day while attempting to tune his mechanical oscillator to the vibration of the building housing his New York City laboratory, he caused the ground to shake. During the test, Tesla continuously turned up the power and heard cracking sounds. "Suddenly," he recalled, "all the heavy machinery in the place was flying around. I grabbed a hammer and broke the machine. The building would have been down about our ears in another few minutes." Police and ambulances arrived on the scene to attend to the commotion, but Tesla told his assistants to remain quiet and tell the police that it must have been an earthquake.

2. Thought Camera

Tesla believed it could be possible to photograph thoughts. The inspiration came while he was doing experiments in 1893, Tesla told a newspaper reporter decades later: "I became convinced that a definite image formed in thought must, by reflex action, produce a corresponding image on the retina, which might possibly be read by suitable apparatus." The inventor conceived of reflecting an image on an artificial retina, taking a photograph and projecting the image on a screen. "If this can be done successfully, then the objects imagined by a person would be clearly reflected on the screen as they are formed," he said, "and in this way every thought of the individual could be read. Our minds would then, indeed, be like open books."

3. Wireless Energy

In 1901, Tesla secured $150,000 from financier J.P. Morgan to build a 185-foot-tall, mushroom-shaped tower on the north shore of Long Island capable of transmitting messages, telephony and images to ships at sea and across the Atlantic Ocean by using the Earth to conduct signals. As work began on the structure, called Wardenclyffe Tower, Tesla wanted to adapt it to allow for wireless power delivery, believing from his experiments on radio and microwaves that he could light up New York City by transmitting millions of volts of electricity through the air. Morgan, however, refused to give Tesla any additional funding for his grandiose scheme. (Some speculate that Morgan cut off funds once he realized that Tesla's plan would have crippled his other energy-sector holdings.) Tesla abandoned the project in 1906 before it could ever become operational, and Wardenclyffe Tower was dismantled in 1917.

4. Artificial Tidal Wave

The engineer and physicist believed the power of science could be harnessed to prevent war. In 1907 the New York World reported on another of Tesla's military innovations in which wireless telegraphy would trigger the detonations of high explosives at sea to generate tidal waves so vast that they would capsize entire enemy fleets. The newspaper reported that the artificial tidal wave would "make navies as useless as the paper boats that babies float in bathtubs" and, foreshadowing later claims about the development of nuclear weapons, "by its horrors hasten the day of universal peace."

5. Electric-Powered Supersonic Airship

From the time Tesla was a boy, he had been fascinated with the idea of flight. Combining his knowledge of electrical and mechanical engineering, he began to think more about aviation after the failure of Wardenclyffe. In an article in the July 1919 issue of Reconstruction magazine, Tesla discussed his work on developing a supersonic aircraft that would travel eight miles above the surface of the Earth and generate speeds allowing passengers to travel between New York City and London in three hours. Tesla's concept called for the aircraft to be powered by electricity transmitted wirelessly from power plants on the ground, eliminating the need for aircrafts to carry fuel. "The power supply is virtually unlimited, as any number of power plants can be operated together, supplying energy to airships just as trains running on tracks are now supplied with electrical energy through rails or wires," Tesla said in the article.

6. "Death Beam"

Tesla's creative mind continued to spark new visions even late in his life. On his 78th birthday, he told The New York Times that he had come up with this most important invention, one that would "cause armies of millions to drop dead in their tracks." The invention? A military weapon that would accelerate mercury particles at 48 times the speed of sound inside a vacuum chamber and shoot a high-velocity beam "through the free air, of such tremendous energy that [it] will bring down a fleet of 10,000 enemy airplanes at a distance of 250 miles." Although the press dubbed it a "death beam," Tesla believed it a "peace beam" that would foil attacks by airplanes and invading armies and save lives by acting "like an invisible Chinese wall, only a million times more impenetrable." Tesla offered his particle-beam weapon to numerous governments, including the United States, but the only country to show interest was the Soviet Union, which conducted a partial test in 1939.

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6 Brilliant Tesla Inventions That Never Got Built

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"It seems that I have always been ahead of my time," Serbian-American engineer and physicist Nikola Tesla once mused. While the eccentric inventor pioneered advances in radio, television, motors, robotics and electricity-including the alternating-current technology that's widely used today-he also proposed more outlandish ideas.

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Among his numerous innovations, Nikola Tesla dreamed of creating a way to supply power to the world without stringing wires across the globe. The inventor came close to accomplishing this when his "mad scientist" experiments with electricity led to his creation of the Tesla coil.

The first system that could wirelessly transmit electricity, the Tesla coil was a truly revolutionary invention. Early radio antennas and telegraphy used the invention, but variations of the coil can also do things that are just plain cool - like shoot lightning bolts, send electric currents through the body and create electron winds.

Tesla developed the coil in 1891, before conventional iron-core transformers were used to power things like lighting systems and telephone circuits. These conventional transformers can't withstand the high frequency and high voltage that the looser coils in Tesla's invention can tolerate. The concept behind the coil is actually fairly simple and makes use of electromagnetic force and resonance. Employing copper wire and glass bottles, an amateur electrician can build a Tesla coil that can produce a quarter of a million volts. [ Infographic: How the Tesla Coil Works]
The setup
A Tesla coil consists of two parts: a primary coil and secondary coil, each with its own capacitor. ( Capacitors store electrical energy just like batteries.) The two coils and capacitors are connected by a spark gap - a gap of air between two electrodes that generates the spark of electricity. An outside source hooked up to a transformer powers the whole system. Essentially, the Tesla coil is two open electric circuits connected to a spark gap.

A Tesla coil needs a high-voltage power source. A regular power source fed through a transformer can produce a current with the necessary power (at least thousands of volts).

In this case, a transformer can convert the low voltage of main power into the high voltage.

(Image credit: by Ross Toro, Infographics Artist)

How it works
The power source is hooked up to the primary coil. The primary coil's capacitor acts like a sponge and soaks up the charge. The primary coil itself must be able to withstand the massive charge and huge surges of current, so the coil is usually made out of copper, a good conductor of electricity. Eventually, the capacitor builds up so much charge that it breaks down the air resistance in the spark gap. Then, similar to squeezing out a soaked sponge, the current flows out of the capacitor down the primary coil and creates a magnetic field.

The massive amount of energy makes the magnetic field collapse quickly, and generates an electric current in the secondary coil. The voltage zipping through the air between the two coils creates sparks in the spark gap. The energy sloshes back and forth between the two coils several hundred times per second, and builds up in the secondary coil and capacitor. Eventually, the charge in the secondary capacitor gets so high that it breaks free in a spectacular burst of electric current.

The resulting high-frequency voltage can illuminate fluorescent bulbs several feet away with no electrical wire connection. [ Photos: Nikola Tesla's Historic Lab at Wardenclyffe]

In a perfectly designed Tesla coil, when the secondary coil reaches its maximum charge, the whole process should start over again and the device should become self-sustaining. In practice, however, this does not happen. The heated air in the spark gap pulls some of the electricity away from the secondary coil and back into the gap, so eventually the Tesla coil will run out of energy. This is why the coil must be hooked up to an outside power supply.

The principle behind the Tesla coil is to achieve a phenomenon called resonance. This happens when the primary coil shoots the current into the secondary coil at just the right time to maximize the energy transferred into the secondary coil. Think of it as timing when to push someone on a swing in order to make it go as high as possible.

Setting up a Tesla coil with an adjustable rotary spark gap gives the operator more control over the voltage of the current it produces. This is how coils can create crazy lightning displays and can even be set up to play music timed to bursts of current.

While the Tesla coil does not have much practical application anymore, Tesla's invention completely revolutionized the way electricity was understood and used. Radios and televisions still use variations of the Tesla coil today.

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Wireless Electricity? How the Tesla Coil Works

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Among his numerous innovations, Nikola Tesla dreamed of creating a way to supply power to the world without stringing wires across the globe. The inventor came close to accomplishing this when his "mad scientist" experiments with electricity led to his creation of the Tesla coil.

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Tesla soon established his own laboratory, where his inventive mind could be given free rein. He experimented with shadowgraphs similar to those that later were to be used by Wilhelm Rntgen when he discovered X-rays in 1895. Tesla's countless experiments included work on a carbon button lamp, on the power of electrical resonance, and on various types of lighting.

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All in all know you know more about nikola tesla then someone that hasn't heard of him.

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All in all know you know more about nikola tesla then someone that hasn't heard of him.

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Did you also know that Nikola Tesla made his own electric car that could run without gas and without having to charge them that's when the government had to destroy it because they weren't getting paid enough because he didn't have to charge it, also because he don't have to pay gas that's why they made Tesla cars  after he died so they can make it chargable.

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Did you also know that Nikola Tesla made his own electric car that could run without gas and without having to charge them that's when the government had to destroy it because they weren't getting paid enough because he didn't have to charge it, also because he don't have to pay gas that's why they made Tesla cars  after he died so they can make it chargable.

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Did you know that Nikola Tesla was killed in a hotel room in New York in January of 1943.  All the evidence, documents and files of his death were stolen and never found.  

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Did you know that Nikola Tesla was killed in a hotel room in New York in January of 1943.  All the evidence, documents and files of his death were stolen and never found.  