Despite promoting alternative current, Nikola Tesla did not invent it

Nikola Tesla embraced showmanship when promoting ideas ahead of their time

He once electrified himself during a live demonstration to illustrate the safety and power of alternating current, and his presentations often featured arcing coils, glowing lights, and bold claims about a future of wireless power.

Tesla's alternating current power's most of the world's electric grids

In 1879, Thomas Edison’s light bulb relied on direct current, but such currents can't efficiently transmit power over long distances. Nikola Tesla introduced alternating current, which feature far fewer energy loses. Despite Edison’s attempts to discredit AC, Tesla proved its efficiency by lighting the 1893 Chicago World’s Fair.

Nikola Tesla was born in modern-day Croatia and moved to the US in 1884

His interest in electricity came from his mother, who invented small household appliances during Tesla's upbringing. Upon arriving in America, he began working for and improving upon the electrical inventions made in Thomas Edison's lab.

The Tesla coil was the first system to wireless transmit electricity

Developed in 1891, the system effectively consists of two open electric circuits with a gap of air between them. When a high enough voltage is built up, air becomes a conductor and sparks of electricity are generated.

Tesla's lack of business savvy and inability to commercialize led to his obscurity

For decades, despite pioneering technologies for large-scale electrical systems and telecommunications, Nikola Tesla had been forgotten to history. Rather than monetizing his work and becoming more well known, his inventor-first mentality saw him sell off lucrative patents to fund new experiments in the short term.

The disputed inventor of the radio

Guglielmo Marconi was awarded the 1909 Nobel Prize in physics for inventing the wireless telegraph, which used radio waves to transmit Morse code. Nikola Tesla, however, was experimenting with radio waves in the 1890s, though much of his work was destroyed in a 1895 fire.

Nikola Tesla's original laboratory was recognized as a historical site in 2018

Beginning in 1901, the Wardenclyffe Tower was built on Long Island, New York to transmit electrical power through Earth's atmosphere. The project was abandoned before becoming operational due to limited funding, and was demolished for scrap in 1917 to help pay off Tesla's debts.

George Westinghouse purchased Tesla's AC technology patents for $60,000

The seven patents in alternating current motors and power transmission formed the basis for a system of technologies including generators, transformers, and lighting. Nikola Tesla spent half the funds on a new laboratory to develop new inventions.

No proof of Nikola Tesla developing a working 'death ray' exists

He described his "teleforce" weapon as generating beams of concentrated particles that could destroy targets from 250 miles away with unparalleled precision. Analysis of Tesla's papers on the subject by an expert after his death revealed the work to be mostly speculative.

Electromagnetic induction creates electricity from a changing magnetic field

The phenomenon was discovered in 1831 by Michael Faraday when an electric current was induced in a wire wrapped around an iron ring after a second wrapped wire not connected to the first was connected or disconnected from a battery.

Read about the nine depictions of Nikola Tesla in media through 2020

Portrayals include comedic takes, like John C. Reilly's performance in Comedy Central's "Drunk History" series, and more serious interpretations, like Nicholas Hoult's performance in Alfonso Gomez-Rejon’s historical drama, "The Current War."

Before the invention of transistors, vacuum tubes made radio possible

Discovered by Thomas Edison, vacuum tubes allow electrical currents to travel through empty space. Later modified into a diode—keeping current flowing in only one direction—vacuum tubes allowed electronics to turn alternating current into direct current.

A quote by scientist Nikola Tesla

"The scientific man does not aim at an immediate result ... His duty is to lay the foundation for those who are to come, and point the way."

The history of many kitchen appliances involves unexpected discoveries and applications, including wartime radar turned hamster defroster and replacing an 'ice king' with heat-stealing boxes.

19th-century Americans used technology to try to prove the existence of ghosts

In the 19th century, following technological advancements like the telegraph, phonograph, and others, efforts were made to capture proof of ghosts. These technologies seemed supernatural in their own right and emerged at the same time Spiritualism took off in the US, resulting in new approaches to connecting with the dead.

Silicon Valley’s history in technology can be traced back to the late 1800s

From its developments in radio, defense technology, and personal computing, Silicon Valley has been associated with innovating tech for more than a century. This animated timeline of Silicon Valley’s history helps visualize its evolution.

A Belgian Catholic priest was the first to come up with the idea for the Big Bang

In 1931, Georges Lemaître presented his radical idea that the universe came from a “primeval atom,” challenging the long-held belief that the universe had always existed. Einstein initially dismissed Lemaître’s work as having “abominable” physical insight, only to accept it later.

Samuel O’Reilly patented the tattoo gun in 1891

Before the tattoo gun's invention, recipients sweated while artists slowly tapped or sliced designs into their flesh. The tattoo gun changed the field, helping artists ink clients’ skin at incredible speeds. Inventor Samuel O’Reilly applied the basic idea of an electric pen invented by Thomas Edison to his tattoo gun.

The Middle Ages produced inventions that still our lives today

Far from a “Dark Age,” the medieval era brought about significant innovations—from the printing press and mechanical clocks to navigational tools and early computing devices. This curated list of inventions demonstrates how profoundly medieval creativity has shaped the modern world.

Saint Nicholas was a Turkish bishop from the third century

The Christian clergyman didn’t ride in a flying sleigh or have a workshop full of elves, but he was known for his generosity and anonymous good deeds, which became the basis for the story of Santa Claus.

Many myths continue to circulate about the first Thanksgiving

The Thanksgiving myth didn’t really start in 1621, argues historian David Silverman in this interview with Smithsonian. Rather, it took hold over 200 years later. During the Civil War, Thanksgiving was declared a national holiday by Abraham Lincoln as a way to promote national unity. The tidy story of friendship between Native Americans and colonists was used to quell racial tensions of the late 19th century.

The Illuminati were a real espionage society in the 1770s

Bavarian professor Adam Weishaupt founded the group in 1776 as an anti-clerical, anti-royalist sect that used hierarchy, codes, and surveillance as a proto-spy network. Within a decade, it was suppressed, but the mythology never quite died. Today, it functions as an adaptable conspiracy theory, able to fit any era's anxieties about who really holds power.

How to make your own DIY ionic thruster

In the search for more efficient, sustainable types of propulsive thrust, scientists have dabbled in developing engines using ionic thrust, a type of propulsion using the attractive force of oppositely charged ions. First introduced by a Russian...

Aliens have invaded ancient history

Avid fans of archaeology can sometimes fall prey to unsubstantiated claims like "aliens built the pyramids," provocative, dubious theories which fall under the category of pseudo-archaeology. Many of these claims are premised on hidden biases toward non-Western cultural heritages. This professor explores the hidden contours of pseudo-archaeology in this 12-minute TED talk.

The scientific name for northern lights came from two Greco-Roman gods

Although cave paintings may have depicted them millennia earlier, one of the oldest known references to auroras is a Babylonian cuneiform tablet from about 600 BCE. In 1619, Galileo Galilei named the phenomenon in the northern hemisphere "aurora borealis" after the Roman goddess of dawn—Aurora—and the Greek god of the north wind—Boreas.

Picasso was one of the 20th century's most influential artists

The artist is recognized as one of the inventors of cubism, which simplified figures and scenes into flattened geometric shapes and imagined arrangements. The movement spurred new styles in response and led to increasingly abstract art. Styles like futurism, dada, De Stijl, and art deco were built on the simple forms, abstract ideas, collage, and found objects of early cubism.

Learn more about the history of fireworks, which dates back to an accidental invention during an alchemist's quest for information about immortality.

The first robot in literature may have been a 'mechanical man' in 1907's 'Ozma of Oz,' a book in L Frank Baum's 'Wizard of Oz' series.

The first horror movie is believed to be George Méliès' 1986 short 'The Haunted Castle,' which pioneered the use of special effects

Clever Hans was a 1900s horse that was believed to be able to solve math equations, tell time, and read and comprehend German, until a psychology student discovered how he got his answers.

The name 'Silicon Valley' arose from the founding of Shockley Semiconductor Laboratory in Fairchild Semiconductor in 1956-57, founded near Stanford University in Palo Alto

Electrical grids worldwide must double their power delivery capacity by 2050 to meet surging demand from AI and electric vehicles.

Planeterrellas create artificial auroras that mimic the atmospheric displays of light by setting up an electric field between two metal balls in a jar filled with a small amount of air.

English mathematician Ada Lovelace wrote the first computer algorithm a century before computers existed and hypothesized that computing devices would one day be able to compose music—foreseeing the generative AI systems of today.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

Pure water does not conduct electricity because this flow of energy requires the movement of charged particles, and water is a neutral molecule.

Salvador Dalí believed he was his own dead brother, who had died nine months before he was born

Before writing 'Walden,' transcendentalist Henry David Thoreau nearly burned down his hometown with a campfire that grew out of control.

The Mona Lisa's celebrity status and repeated restorations have obscured what made the painting so revolutionary for its time

Sony set the standard for cylinder-shaped batteries when it repurposed manufacturing equipment used to make rolls of magnetic recording tape.

The first line of 'immortal' human cells, which can divide indefinitely and are used in scientific research, was nonconsensually taken from a Black woman.

How fusion—which releases energy when two lighter atoms combine to form a heavier atom—differs from fission

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

Abraham Lincoln was almost assassinated weeks before his inauguration as he traveled from Illinois to DC through Baltimore in 1861; it took two independent claims for Lincoln to be convinced the threat was real

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

Some Pokémon have been named after real and fictional organisms, while some real-world species have been named after Pokémon, such as Chilicola charizard and Binburrum zapdos.

Hear about the 250-year history of the United States Postal Service, complete with some of its strangest deliveries, important innovations, and the figures that made it an American institution.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

El Niño, Spanish for 'the boy,' was named after Jesus Christ because the phenomenon resembled the weather changes observed around Christmastime.

Prince's sexually explicit 1984 track 'Darling Nikki' attracted the ire of the Parents Music Resource Center, an advocacy group that inspired the Parental Advisory sticker, even though the song ends with a Christian message.