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General: EXPLAINER: WHAT IS A TESLA COIL? TRANSFORMER FLEUR DE LIS DA VINCI CODE
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Da: BARILOCHENSE6999  (Messaggio originale) Inviato: 03/04/2025 03:43

Explainer: what is a Tesla coil?

Published: February 17, 2014 6.05am GMT
Taste the current. arselectronica

Picture a reclusive man, dripping with sweat all night in a dark lab, illuminated only by crackling sparks that periodically leap from enormous machines and cast a purple glow across his face. This was Nikola Tesla, the archetype of the mad scientist. His inventions fill the world around us; they are instrumental to our modern electrical grid. They are quiet, reliable, invisible machines.

Perhaps his most famous invention is the Tesla coil – a contraption that produces beautiful flying arcs of electrical energy. It was invented by Tesla in an attempt to transmit electricity wirelessly.

Transformer in action

The principles behind the Tesla coil are relatively simple. Just keep in mind that electrical current is the flow of electrons, while the difference in electric potential (voltage) between two places is what pushes that current. Current is like water, and voltage is like a hill. A large voltage is a steep hill, down which a stream of electrons can rapidly flow. A small voltage is like a near-flat plain with almost no water flow.

The power of the Tesla coil lies in a process called electromagnetic induction. This is where a changing magnetic field creates a voltage that compels current to flow. In turn, the flowing electric current generates a magnetic field. When electricity flows through a wound up coil of wire, it generates a magnetic field that fills the area around the coil in a particular pattern.

 
Electricity flowing through a wound up coil produces this kind of magnetic field. Photo modified by XX from Los Alamos National Lab

Similarly, if a magnetic field flows through the centre of a coiled wire, a voltage is generated in the wire, which causes an electrical current to flow.

The voltage (“hill”) generated in a coil of wire by a magnetic field through its centre increases with the number of turns of wire. A changing magnetic field within a coil of 50 turns will generate ten times the voltage of a coil of just five turns. (However, less current can actually flow through the higher potential, to conserve energy.)

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This is exactly how a common alternating current (AC) electrical transformer, found in every home, works. The constantly fluctuating electric current flowing in from the power grid is wound through a series of turns around an iron ring to generate a magnetic field. Iron is magnetically permeable, so the magnetic field is almost entirely contained in the iron. The ring guides the magnetic field (in green to the right) around and through the centre of the opposite coil of wire.

 
Electrical transformer in action. BillCCC BY

The ratio of coils on one side to the other determines the change in voltage. To go from 120V household wall voltage to, say, 20V for use in a laptop power adaptor, the output side of the coil will have six times fewer turns to cut the voltage to one sixth its original level.

How the coil rolls

Tesla coils do the same thing, but with a much more dramatic change in voltage. First, they employ a pre-made high voltage iron core transformer to go from 120V wall current to roughly 10,000V. The wire with 10,000 volts is wrapped into a large (primary) coil with only a handful of turns. The secondary coil contains thousands of turns of thin wire. This steps up the voltage to between 100,000 and 1,000,000 volts. This potential is so strong that the iron core of a normal transformer cannot contain it. Instead, there is only air between the coils.

The Tesla coil requires one more thing: a capacitor to store charge and fire it all in one huge spark. The circuit of the coil contains a capacitor and a small hole called a spark gap. When the coil is turned on, electricity flows through the circuit and fills the capacitor with electrons, like a battery. This charge creates its own electric potential in the circuit, which tries to bridge across the spark gap. This can only happen when a large amount of charge has built up in the capacitor.

Eventually so much charge has accumulated that it breaks down the electrical neutrality of the air in the middle of the spark gap. The circuit closes for a fleeting second and a huge amount of current blasts out of the capacitor and through the coils. This produces a very strong magnetic field in the primary coil.

The secondary wire coil uses electromagnetic induction to convert this magnetic field to an electric potential so high that it can easily break apart the air molecules at its ends and push their electrons in wild arcs, producing enormous purple sparks. The dome on the top of the device acts to make the secondary coil of wires receive energy more fully from the first coil. With some careful mathematical calculations, the amount of electrical energy transferred can be maximised.

Flying blue streamers of electrons flow off the coil and through the hot air searching for a conductive landing place. They heat the air and break it into a plasma of glowing ion filaments before dissipating into the air or surging into a nearby conductor.

A tremendous light show is generated, as well as a loud buzzing, crackling sound, which can be used to play music. The electrical theatrics are so stunning that Tesla was known to use his device to scare and mesmerise visitors to his lab.

Tesla might not have invented a source of unlimited power, which was one of his goals, but he did design a brilliant machine to demonstrate the sheer power and beauty of electricity.

https://theconversation.com/explainer-what-is-a-tesla-coil-22723


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De: BARILOCHENSE6999 Enviado: 03/04/2025 12:18

Chapter 15 <BR>Section C <BR>Factors affecting inductance

 
 
Types, Principles & Applications of Inductors/Inductor Coils
Energy density in Magnetic fields | Inductance | Physics | Khan Academy
Magnetic Field Equation Craft Magnets Electricity Inductance, PNG,  1186x843px, Magnetic Field, Ampere, Area, Black, Black And
 
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Importance of Inductance of a Coil | GBC Electronics Technician
What is Electromagnetic Induction? - Technical Articles
Electromagnetic Induction and Faradays Law
 
Electromagnetic Induction and Faradays Law
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Did Nikola Tesla Time Travel?

·
Photo by Marija Zaric on Unsplash 

Apparently, Tesla was very obsessed with time travel. He worked on a time machine project. Maybe he succeeded because once he said ;

“I could see the past, the present and the future at the same time.” Nikola Tesla

The idea that a person can travel through time is something that millions of people around the world dream about and ponder.

Looking back, we can come across numerous texts that can be interpreted as evidence of time travel.

When Albert Einstein published his Theory of Relativity in 1905, he opened a new page in the scientific community, “Is time travel possible?” It raised many questions such as

There is even evidence of time travel in the Bible, according to Erick von Daniken, author of one of the best-selling books in history:

“In the Bible, the prophet Jeremiah was sitting with some of his friends, and there was a young boy. His name is Abimelech.

Jeremiah said to Abimelech:

“Come out of Jerusalem, there is a hill, and from that hill, pick figs for us.”

The boy went out and picked fresh figs. All of a sudden, Abimelek hears some noise in the air and when she feels the wind in the air, she loses consciousness and faints.

After a while, he wakes up again and sees that it is almost evening.

When he returns to the community, the city is filled with strange soldiers and he wonders:

“What is going on here, where are Jeremiah and the others? ” An old man replies: ” That was 62 years ago ”. — A time travel story set in the Bible. — Von Daniken.

If we look at the Mahabharata, written in the eighth century (B.C.), King Raivata travels to the sky to meet the creator God Brahma, but when he returns, he finds that hundreds of years have passed on Earth.

In Japan, we find a similar situation in the legend of Urashima Taro. It tells the story of a fisherman visiting the god of the seas, Ryūjin, in what seems like only three days. When the fisherman returns to his town, 300 years have passed and his town is unrecognizable.

It is possible to reproduce this and similar historical texts. Who knows? Perhaps all these “myths” will inspire great thinkers to find a way to get to time travel.
Now let’s come to our near future…

Recently, a group of scientists from the University of Queensland, Australia, investigated how time-travelling photons would move. Researchers simulated Photons’ travel into the past.

After studying the behaviour of quantum particles, scientists uncovered possible anomalous aspects of today’s physics.

However, Nikola Tesla’s work on time travel begins before modern science saw time travel as possible.

According to reports, in 1895 Tesla made a shocking discovery that suggested that time and space could be affected by magnetic fields. Tesla thought that he could disrupt the continuity of time and space by using intense magnetic field effects.

The experiment, the main purpose of which was to make the ships of the navy invisible on the radar, caused very different results with the Tesla factor, and the ship and its crew travelled in time by disappearing from the eyes for a certain period of time.

Although the Philadelphia Experiment, which was kept secret for a long time, came to light with the explanations of some of the survivors who were on the ship that day, the authorities closed the issue by saying that the event was a figment of imagination.

Tesla’s assistant explains the existence of Tesla’s work on time travel and the fact that he may have partially realized it:

Tesla was exposed to magnetic waves that he had artificially produced, during which he found himself in a completely different space-time window, where he could see both the past, the future and the present at the same time.

The magnetic effect he was exposed to nearly killed him, and I prevented it. That’s why he was angry with me.

After Tesla’s death, the notes, which were curious by everyone, were collected by the FBI overnight and disappeared.

For this reason, unfortunately, there is no document to confirm exactly what is stated in this article. The situations mentioned are the expressions experienced and voiced by those living near him.

Tesla is one of the greatest scientists in our history, and with his death, he left many mysteries behind.

Tesla is the architect of many of the technologies we use today, but unfortunately, his name is not even mentioned as much as those who do much less than him.

The reason for this is that Tesla was not a political thinker like Edison and others, but devoted himself only to science.

https://medium.com/illumination/did-nikola-tesla-time-travel-1d44307c05cd

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Subestación eléctrica de maniobras Magdalena I (Parque Solar Magdalena I)

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La Dirección General de Impacto y Riesgo Ambiental de la Secretaría de Medio Ambiente y Recursos Naturales informa que ha recibido la documentación de la firma promovente Más Energía, para el proyecto de la Subestación eléctrica de maniobras Magdalena I (Parque Solar Magdalena I).

El proyecto consiste en la construcción, operación y mantenimiento de una subestación eléctrica de maniobras, dos accesos, y una línea eléctrica de entronque de 400 Kv que se interconectará a una línea de transmisión eléctrica existente de 400 Kv propiedad de la Comisión Federal de Electricidad para desahogar la energía eléctrica que se genera en la planta fotovoltaica parque solar Magdalena I al Sistema Eléctrico Nacional.

Este contenido está protegido por derechos de autor y no se puede reutilizar. Si desea cooperar con nosotros y desea reutilizar parte de nuestro contenido, contacte: editors@pv-magazine.com.

 
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6 Schematic representation of a cyclotron. The distance between the pole pieces of the magnet is shown larger than reality to allow seeing what is inside

6 Schematic representation of a cyclotron. The distance between the pole pieces of the magnet is shown larger than reality to allow seeing what is inside

https://www.researchgate.net/figure/Schematic-representation-of-a-cyclotron-The-distance-between-the-pole-pieces-of-the_fig3_237993541

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Fachada de Santa María de la Victoria.

La Iglesia de Santa María de la Victoria (en italianoSanta María della Vittoria) es una pequeña basílica en Roma (Italia), en la Via XX Settembre (GARIBALDI).

 
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Fachada de Santa María de la Victoria.

La Iglesia de Santa María de la Victoria (en italianoSanta María della Vittoria) es una pequeña basílica en Roma (Italia), en la Via XX Settembre (GARIBALDI).

 
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Los ovnis Nazi Cómo el que vuelan: exposing alemán Tesla última intervensión Programa de energía

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Da: BARILOCHENSE6999 Inviato: 04/04/2025 15:54

Tesla Coil – 1891

By the late 1800s, electricity had long been discovered and was no longer considered a novelty. The science of how to store, enhance, or transmit electrical current was just beginning to evolve, and eccentric scientist Nikola Tesla (1856-1943) was on the cutting edge of that research.


Tesla Coil – 1891
 

 

In 1891, Tesla unveiled one of his most important inventions, the "Tesla coil," a high-frequency transformer capable of creating very high voltage at low current. He built several variations of his invention.

The most popular of his designs is made up of a transformer, capacitor, spark gap, main coil, minor coil and discharge sphere. Here is how it works: The transformer receives a charge of about 100 volts from an outside source and increases it to as many as 50,000 volts or more. The capacitor stores the voltage until it reaches its limit, at which point the spark gap emits all of the pent-up energy in one massive outburst, surging to the main coil, which is often built out of wide copper wire, generating a powerful magnetic field. The current continues to the minor coil that serves as a transformer, utilizing the effects of the magnetic field to build enormous quantities of voltage. At this point, the electricity flows to a discharge sphere that emits the current as a stream or arc of sparks.

Circuitry using the Tesla coil was part of the first generation of transmitters to carry wireless telegraphy. Tesla used his brainchild to research such diverse areas as lighting, X-rays and electric power transmission. Customized Tesla coils are now frequently used to ignite powerful mercury and sodium streetlamps.

Although they have now been largely replaced by more modern circuitry, Tesla coils frequently show up in popular media, most commonly in the form of high-tech guns in video games, blasting bolts of lightning at adversaries. On the big screen, a Tesla coil was used to produce lighting effects for the 1979 film "Star Trek: The Motion Picture."

https://nationalmaglab.org/magnet-academy/history-of-electricity-magnetism/museum/tesla-coil-1891/

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The Secret Experiment — Einstein and Tesla

In 1943 the US Navy conducted a series of tests to make allied ships and enemy radar invisible. The results of these tests were never made public, but the last test, the one that would conclude the project, is known to all as the Philadelphia Experiment.

It is 1943 and we are in the midst of the Second World War. The two sides are trying to get the better of the other by trying to create increasingly new and modern as well as particular weapons. At that moment a ferocious naval battle was underway between the US ships and the fearsome German U-bots, in which the silent hunters seemed, at the moment, to have the upper hand by continuing to sink allied ships. The US then wondered if it was possible to take camouflage to a higher level to make a ship invisible to radar, or completely invisible.

Thus the Rainbow project was born, of which the Philadelphia experiment marked the conclusion.

The Americans believed they already had a theory suitable for the realization of their project. The interaction between gravity, magnetism and electricity theorized by Einstein seemed perfect. But there was a problem: they neededsomeone who was able to implement it on a practical level and in those years there was only one person capable of doing it: Nikola Tesla.

The idea was to use Einstein’s unproven theory of the unified field and the head coil. The Rainbow project was classified and executed in two different phases.

The first phase involved making a ship invisible to the radar. According to some witnesses, this phase was successful and it was decided to move on to phase two, i.e. attempting total invisibility. It was in that moment that something went wrong.

The ship chosen for the experiments was the recently completed U.S.S. Eldridge, with a crew of 30 men who were not aware of the experiments, at least in the first phase. According to some sources, in the second phase, the personnel were selected by a group of Navy volunteers and scientists. Meanwhile, in 1942, Nikola Tesla withdrew from the project, followed shortly after by Einstein.

USS Eldridge

Replacing Tesla, the mathematician and physicist John von Neumann joined the team, who, unlike Tesla, had no particular moral reservations.

On October 28, 1943, everything was ready at the port of Philadelphia. At 5:15 pm the USS Eldridge and its crew disappeared into a green cloud. After a few minutes, the ship reappeared near Norfolk, a good 500 km away from its starting point, then disappeared and reappeared in Philadelphia in the same place where it had been before.

A scen from the movie

According to some versions, the ship even went back 10 minutes. However, when Eldridge reappeared, the image that was shown to those present was horrible. Some sailors were welded inside the ship entirely or partially, destined to suffer an atrocious death, while others had lost their minds. The surviving sailors all died not long after due to illnesses or physical problems that developed as a result of the experiment.

A scene from the movie

But how do we know all this?

In 1955 Morris K. Jessup, a science graduate and amateur photographer and astronomer, after having observed and studied the movements of UFOs for years, published a book The Case for the UFOs. In the book, Jessup wrote that he believed that the propulsion system of UFOs should be studied in more depth because from what he had observed and applied, in some way, the somewhat unified theory on which Einstein had worked.

Morris K. Jessup

The book achieved some success and Jessup began to enjoy a certain notoriety for his theories and speculations on antigravity and electromagnetism, as well as for what was said in the book.

With his book and his ideas he had attracted someone’s attention and in January 1956 he received a letter from someone who signed himself Carlos Miguel Allende. In the letter Allende confirmed the validity and interest of Jessup’s theories, but not only that. Allende also wrote about a certain experiment conducted by the US military secret services in 1946, where the unified field theory was applied on a stalking hunter.

According to Allende the outcome proves that the unified field theory is, to some extent, correct. The result was the complete invisibility of a ship and all its crew.

“I would like to point out that the experimental ship disappeared from the Philadelphia dock and only a few minutes later reappeared in the Portsmouth dock, opposite Norfolk. It was clearly and distinctly identified at that location, then disappeared again and returned to the Philadelphia docks in a matter of minutes, or less. “ — From Allende’s letter.

Jessup was struck by that stranger’s letter and thus began an exchange of letters.

Allende, in subsequent letters, claimed to be a direct witness to the experiment as he was a sailor who was at the time on the USS Andrew Furuset, a Liberty-class transport ship assisting in the operations.

After some exchanges of letters, Jessup wrote a long letter in which, now fascinated by Allende’s story, he requested more details. The answer took a long time, but it finally arrived.

Although the writing was the same as always, signing that letter, however, was not Carlos Miguel Allende, but a certain Carl Allen who said he could not provide more information or evidence because the facts known on the subject, except those of which he was same witness, had emerged from hypnotic sessions carried out on subjects present at the events.

In a letter, Allende referred to an article published in the Philadelphia newspaper, which told of three sailors who had appeared out of nowhere in a bar near the port, almost as if they had arrived from an adjacent door or room, which however did not exist. After a couple of minutes the sailors had disappeared.

The Navy said it was unaware of this fact.

The exchange continued and Jessup began to investigate. From that moment on he will only find half-truths and unsourced information.

During interviews about the book, Jessup also began talking about the Philadelphia experiment. In 1957 he was summoned to the Office of Naval Research because the agency had received a package containing a copy of his book with various handwritten notes, presumably by three different people, on the pages.

The notes talked about extraterrestrial technologies and time travel. Jessup, however, immediately recognized Allende’s messy and distinctive handwriting. After a brief interrogation, Jessup was free to return home. Jessup continued to investigate, but in 1959 he was found dead inside his car.

According to investigators, the man, depressed after the loss of fame following his book and due to family problems, had decided to take his own life through the car exhaust pipe. Despite protests from family and friends, who always opposed the idea of ​​suicide, no investigation or autopsy was carried out.

We know, however, that Jessup, before his death, had telephoned his friend Dr. Mason Valentin to inform him that he had reached extraordinary conclusions regarding the Philadesia experiment, thanks to new evidence. During the phone call they agreed to meet the following morning at Valentin’s house, but neither Jessup nor his notes ever arrived.

Conspiracy theories about his death began immediately, according to which Jessup had been eliminated by the Men in Black, the CIA or similar, because he talked too much and asked himself too many questions.

After Jessup’s death, a researcher claimed to have discovered the true identity of Allende: Carl Allen from Pennsylvania. Allen had suffered from delirium problems, but during World War II he had actually served in the US Navy, as he described in his letters.

From that moment until around 1977, the history of the Philadelphia experiment was no longer explored and for some periods it ended up forgotten.

But in 1977 a book was published, The Bermuda Triangle, which also talked about the experiment. The book was written by Charles Berlitz, a former intelligence agent, who has since become a bestselling writer of mysteries, mysterious archeology and alternative history. Berlitz’s statements regarding the experiment seem mostly forced, inaccuracies and manipulations, but despite this the success of his book brought attention back to those events.

Charles Berlitz

Over time, some people came forward claiming to have been on the ship or on the support ships on the day of the experiment.

Among these, one of the most famous is Alfred Wieleck, who served as a scientist. S. Eldridge on October 28, 1943. Wieleck’s real name was Edward Cameron and in 1990 he publicly revealed that he had taken part in both the Philadelphia experiment and the Montauk Project.

Alfred Bielek

In his statements he confirmed that the purpose of the experiment was to make a ship invisible to radar, but the final goal, was to make her invisible. He told how he and his brother were were selected both for the implementation phase of the experiment and as part of the crew not only because they were researchers, but because they were esteemed by Von Neumann, while his younger brother he had been selected as a sailor.

He explained that after activating the machinery which were supposed to make the USS Eldridge disappear, achieved radar invisibility in 70 seconds, but at that point the ship was surrounded by a green cloud and without them knowing it, where their ship had once been there was now a hole and soon after, it disappeared.

John Von Neumann

The electron tubes began to sparkle, then the discharges were clearly seen, in the meantime the radio was totally out of order. Edward and his brother attempted to intervene on the control panel, without success. They then went out onto the bridge, where there was completely chaos because the ship was still surrounded by green fog and the sailors were disoriented. At that point they decided to throw themself into the sea: they never made it to the water, but found themselves in a military base, at night.

They were picked up by the military police whotook them to a building inside the base. There, they met the now elderly Professor Von Neumann who told him that they were in Montauk, Long Island, at the headquarters of the Fenix ​​project (a project involving the flow of time), in 1983. After that Von Neumann told them to return on board and destroy the equipment, that everything was under control and that they would returned in 1943.

The brothers found themselves again on the U.S.S Eldridge and did as they were told. Then tehy were again in Philadelphia in 1943, in the same spot where they were at the beginning of the experiment.

Once they returned, the horror: some crew members had died to a heart attack, others were completely disoriented and on the verge of madness, while others (including the younger Cameron brother) had been incorporated into the steel of the vessel due to molecular breakdown
occurred during the trip they had taken and those who were close to bulkheads or parts of the ship had been reassembled and incorporatedin the matter of the ship.

A scene from the movie

Edward’s brother, shocked by the scene, jumped overboard, returning to the future at the last second.

Edward Cameron later took part to the Montauk experiment and travelled again in time until the year 2137 where he remained for a few months and from there it was then sent to the year 2749 where it remained for a couple of years.

But what did the Navy said about these accusations?

The Navy confirmed that experiments had taken place relating to a sort of invisibility, but said that these were only related to invisibility to magnetic mines, through a process which is called DEGASSING.

Through electrical cables installed along the keel of the ship from the stern at the bow, the controlled electric current would cancel out the ship’s magnetic field.

An explanation that is very reminiscent of those stated by the Air Force regarding the events of Roswell and others.

How much truth there is in the possibility that a ship can disappear?

In the ’70, Professor James Corum put together a group of scientists to try to verify whether there was a scientific basis about the events that were thought to have occurred in 1943.

He discovered that this base existed. The scientists were able to replicate the radar invisibility using the so-called “Tesla Coil”.

It is therefore possible that the Philadelphia Experiment has been accomplished, at least in its first phase.

Tesla Coil

There are many things that, however, don’t add up in various stories and books.

First of all one has to remember that it is in the ’50 that science fiction movies found their golden period because the people were attracted buy them, but also terrified by what those films and some books narrated

The idea and the sensation settled in people that, speaking of space and extraterrestrials, anything was possible, especially after Roswell case.

Furthermore, in those years there was a lot of tension between the USSR and the United States as far as it concerned the space race. The constant talking about space and the wondering about what could be found there, had unleashed in the population, especially the American one, the terror of an alien invasion.

According to the ship’s logs, they recorded that the USS Eldridge, launched on 27 August 1943, remained in port in New York until the end
September and then, in October, left for its maiden voyage to the Bahamas, returning only on October 18 of the same year.

Furthermore, it appears it has never been to Philadelphia for the entire duration of his service, i.e until 1951, when it was sold to the
Greek Navy.

The USS Furuseth, the ship where would Allende claimed to be on, however, was in that period sailing in the Mediterranean Sea.

Some argue that, in fact, the pages relating to that period, have been torn from the ship’s logs. Another fact that doesn’t add up is the theoretical presence of Von Neumann in 1983 (as narrated by Al Bielek): Von Neumann, in fact, died in 1957.

According to some theories Von Neumann did not die in 1957, but moved to the future. After Bielek’s statements, an attempt was made to find out what was true and why, depending on the statement, some details would change. It turned out that Bielek was not only not on board on the USS Eldridge, but he was not even in Philadelphia at that time.

He justified the difference in details in the stories blaming the washing of the brain to which he had been subjected, while the reason for which he was not in the log of the ship and there is no trace of him in Philadelphia at the time, was that all his movements were made secret because of his role in the Mantouk Project.

- NIKOLA TESLA -

Nikola Tesla is now a legend, but what he was doing in the group of scientists of the Experiment Philadelphia? He, the one who had found the way to have energy continuously?

In 1899 Tesla was experimenting how space and time could be influenced by electricity and magnetic fields.

In the same year, a newspaper published a story in which a journalist had found Tesla, sitting alone in a bar. The journalist had greeted him and the scientist had replied:

“I’m afraid you won’t find me nice tonight: the fact is that I almost was killed today. A spark jumped a meter and a half and hit me in the right shoulder. If my assistant hadn’t disconnected the current, I would have died.”

He therefore told the journalist that in the moment he was hit, for him it was like being transported out of our space-time window.

“I could see the past, the present,
the future….all at the same time.”

During the 1930s, Tesla worked at the University of Chicago, conducting experiments to render a body invisible using electricity.

This work will be the basis of the Philadelphia Experiment.

In 1939 his project was transferred to the University of Princeton and it was there that Albert Einstein and others joined Tesla and together they worked on the Project Rainbow and the Philadelphia Experiment.

Not much later, Nikola Tesla withdrew from the project, perhaps sensing the danger that laid hidden behind these experiments, especially if
they had been successful.

A man of strong morality, Nikola Tesla resigned from the project, after trying in every way to stop it. In his place, as already mentioned, John Von Neumann who did not have the same moral reservations as Tesla, entered the project

Nikola Tesla died alone and in poverty in a hotel room, right in 1943.

His room was immediately cleaned from US government officials and the documents collected were sent to the then Director of the FBI, J. Edgar Hoover who made them disappear.

Of most of those documents nothing was known anymore, not even when, after a sentence, the heirs and relatives of the scientist obtained that the documents had to be returned to them.

A part of the very few of Tesla’s documents that are not classified

It was returned to the family less than half of the documents, of which none containing notes on one of the most extraordinary studies
scientist who, unlike some, was not willing to endanger lives, nor
in its present, nor in the future.

In conclusion, it is difficult to say how much of the Experiment
Philadelphia is true. There is too much conflicting information and
different stories and elements that don’t coincide.

Yet, to think that the United States, in those years, have not actually attempted to achieve total invisibility, that would be naive for the people to believe.

The doubt is therefore not about the studies, but on this precise experiment or, at least, on the time travel part.

We now know that they’ve been testing it for years (both invisibility and time travel) and perhaps in Philadelphia that day the U.S.S Eldridge disappeared, time traveled and many men died or maybe it wasn’t that destroyer to disappear and it didn’t do so in 1943, but some time later.

Too many questions and so few answers.

https://medium.com/@commanderk/the-secret-experiment-einstein-and-tesla-06f921e8e563

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Da: BARILOCHENSE6999 Inviato: 04/04/2025 16:16

File:Tesla high-frequency apparatus (Rankin Kennedy, Electrical Installations, Vol V, 1903).jpg

 
 
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Da: BARILOCHENSE6999 Inviato: 04/04/2025 16:22

The Tesla Coil Through Time

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How it came to be and why.

Nikola Tesla was a unicorn person before “unicorn person” became a term.

He was a Serbian inventor who came up with the idea of wireless energy transfer among things like alternating current, induction motors and many others.

I would say that he built out his idea of global wireless energy transfer in three phases. The very first was the Tesla Coil, which I made a video about. You can check it out below.

 

The second phase of his scaling plan was when he built the Magnifying Transmitter. He built this at his laboratory in Colorado Springs.

This was essentially a larger version of the Tesla Coil. Using it as an analogy, the first tower represents the primary coil, and the second tower represents the secondary coil.

Finally, the third phase of his scaling was to take it global. He planned and built out the Wardenclyffe Tower in New York.

However, this version failed and was eventually taken down in 1917, but we’re getting ahead of ourselves. Let’s take a look at what needed to happen before Tesla came up with his very first demonstration; the Tesla Coil.

Historical Beginnings

To explain Tesla’s journey towards global wireless energy transfer, there are a few key points in history and inventions that we need to go over first.

The first key invention is that of the battery in the 1780s. Two physicists, Galvani and Volta, conducted an experiment. I talk about the entire process in my article about the physics behind wireless energy transfer. I’ve linked it below.

Following the battery, a Danish physicist named Hans Christian Ørsted learned that a moving electric current creates a magnetic field. His discovery was the first to find the link between electricity and magnetism. He demonstrated this in a lecture in 1820.

Perhaps the most important invention hereafter for the Tesla Coil is the electromagnet. In 1826, William Sturgeon, an English physicist, discovered that electric current running through a wire coiled around an iron bar caused the iron bar to behave like a magnet.

He fittingly named this the electromagnet.

A few years later in 1831, a man named Michael Faraday wondered if he could make electricity with magnets. So, he used electromagnets. Faraday is most well known for discovering electromagnetic induction.

He used two separate coils wrapped around one iron ring and noticed that when he attached/disconnected a battery to the first wire, the second wire would get a jolt of electricity. He called this inducing a current.

This phenomenon is explained using Faraday’s Law of Induction, which states that:

a changing magnetic field will induce an electromotive force (EMF) in a loop of wire, where EMF is what causes electrons to move and form a current

At this point, all of the components necessary to conceive of the Tesla Coil had been invented, but the background doesn’t end here.

What Was Innovated?

Following Faraday’s discovery of induction, Nicholas Callan, an Irish priest, wanted to improve Faraday’s device.

He decided to wind both the primary and secondary coils around the same iron bar while keeping them electrically separate. Doing this allowed him to feel electrical jolts from wire that had not been directly connected to a battery!

He also found that if the primary wire, the one connected to the battery, was thick and that the secondary wire was thin and had been coiled more, the jolt produced was more powerful.

If the secondary coil has fewer loops than the primary coil, the result is more current and less voltage. However, Callan’s made a secondary coil with more loops than the primary coil, so the result was more voltage and less current.

Callan’s device was named the Step-Up Transformer. When he connected the battery to a coil, it became an electromagnet with a magnetic field. When he disconnected the battery, it lost its magnetic field.

Using Faraday’s Law, every time Callan connected or disconnected, he created a new current in the second coil of wire. He also used a wheel to mechanically connect and disconnect the battery, acting as a kind of “repeater.”

Though this version was later improved by William Sturgeon, Callan’s device was used for electroshock therapy for many years.

The biggest advancement thereafter was using the coil itself to disconnect and connect to the battery instead of using the wheel. How did this work?

Well, the current running through the primary coil caused it to behave like a bar magnet. The wire carrying the current was then connected to a switch so that it could pull on it and activate a spring in the circuit.

The movement of the spring would turn off the current. However, once the connection was removed, the primary coil would no longer be magnetic. This causes the spring to disconnect, and the switch to turn back on.

An Electrical Interrupter

This process of the switch turning on and off would click about 20 to 40 times per second and was named an electrical interrupter.

There was still room for innovation.

The electrical interrupter would sometimes spark. So, in 1853 a man named Armand Fizau created the Leyden Jar to absorb the spark. It was the first version of a capacitor.

This is something made of two large conducting materials separated by insulating material.

By adding the capacitor and getting rid of the spark, Fizau created a new device — one that took DC from a battery and made bursts of AC in the 1850s.

Though not necessary to understanding the Tesla Coil, I’ll mention too that in 1886, Heinrich Hertz added an antenna to the induction coil and created the first man-made radio wave.

This is where Tesla comes in.

Tesla’s Take

Having heard of the radio waves created by Hertz, Tesla visited the World Fair in Paris, 1889. He began tinkering with the induction coil. Among other things, he removed the interrupter and DC battery and replaced it with an AC generator.

This makes sense — why use a battery and mechanical switch to turn the current on and off when a generator that automatically switches the current’s direction could be used instead?

Though this first adaptation didn’t actually work out at the end (due to overheating and melting of wire insulation) it did lead to Tesla’s use of a spark or air gap.

With a few other tweaks, we finally arrive at the original version of the Tesla Coil which looked something like this:

The Original Tesla Coil Circuit Uses Capacitors and Spark Gaps

The modern version, which is what I recreated in my video, is slightly simpler. It no longer uses capacitors or spark gaps and looks like this:

Modern Version of the Tesla Coil Circuit

P.S. for an explanation of how electromagnetic induction works in the modern circuitry, watch my video linked near the beginning of this article.

Nikola Tesla wirelessly lit up a bulb in the year 1891 using his coil, but as I said earlier, his dream was to send wireless power over large distances by using the earth.

After the Tesla Coil worked, he built the larger version that I mentioned earlier called the Magnifying transmitter. It was able to light up three incandescent bulbs at 100ft or 30metres away.

Following his second success, he built the Wardenclyffe Tower in Long Island in 1901. He wanted to use the tower to harness the energy that he thought was inside Earth, in the hopes of turning our planet into a gigantic dynamo.

The tower would take energy from a coal-power generator and send it deep into the ground with a metal rod. He thought that the Earth’s crust would transport the energy.

The tower, however, was considered a failure, was taken down in 1917 and never finished. There are many speculations as to why it didn’t work, some more sound than others, of course.

The article I’ve linked below does a great job of explaining some of the flaws of the tower and how Tesla tried to address

There’s a lot left for us to develop when it comes to modern-day wireless energy transfer. We’ve only scratched the service, even with other methods like radio wave transmission and inductive coupling. To read more about how wireless energy transfer looks now, read this article I wrote.

   

TLDR;

  • Previous inventions including the battery, electromagnet, induction theory and capacitors were all necessary precursors to the Tesla Coil
  • Tesla’s ideation of the coil is based on the principles of electromagnetic induction — a form of wireless energy transfer that we continue to build on now with things like wireless phone charging plates etc.
  • He tried to scale the coil by building the Magnifying Transmitter then the Wardenclyffe Tower
   

If you enjoyed this article, be sure to give it a few ????s and follow me on Medium!

https://ruhani-walia.medium.com/the-tesla-coil-through-time-611067b97019


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