A Germaphobe with an Obsession for Numbers
Tesla was meticulous about cleanliness and avoided physical contact later in life. He also displayed ritualistic habits centered on the number three, including walking around buildings three times before entering and choosing hotel rooms with numbers divisible by three. He held a lifelong fascination with numbers, particularly patterns he believed reflected deeper order in nature.

Master of Lightning
Tesla became famous for dramatic public demonstrations involving high-frequency alternating current. Using Tesla coils, he safely illuminated lamps and produced powerful electrical discharges, showcasing the possibilities of electricity in ways that stunned audiences.

Pigeon Companion
Living alone in New York City, Tesla formed a deep emotional bond with pigeons, especially a white pigeon he cared for devotedly. He wrote that he loved her as one would love another person, and her death deeply affected him.

Inventor of Remote Control
In 1898, Tesla demonstrated a radio-controlled boat, the first known example of wireless remote control. At the time, many observers believed the device was operated by magic or telepathy.

A Life of Little Sleep
Tesla claimed he required very little sleep, sometimes stating he rested only a few hours per night. Historians believe this was likely exaggerated, though his sleep habits were clearly irregular.

The Oscillator Legend
Tesla experimented with mechanical oscillators and later claimed one caused violent vibrations in his laboratory. While the device existed, the dramatic earthquake-like effects remain anecdotal.

Wireless Power Vision
Tesla envisioned transmitting electricity and communication wirelessly. His Wardenclyffe Tower project aimed to explore these ideas but was abandoned after funding collapsed.

Rivalry with Edison
Tesla briefly worked for Thomas Edison before their disagreement over electrical systems led to the famous conflict between direct current and alternating current. Alternating current ultimately became the global standard.

The “Death Ray” Claim
Late in life, Tesla spoke publicly about a theoretical weapon he called Teleforce. No working model or documentation has ever been found.

Radio Priority
Although Marconi is often credited with inventing radio, Tesla’s earlier patents played a critical role. In 1943, the U.S. Supreme Court acknowledged Tesla’s prior work when it invalidated Marconi’s patent.

Mind Like a Workshop
Tesla claimed he could design and test machines entirely in his mind, visualizing them in precise detail before building anything.

Foreshadowing Robotics
Through his work on automation and wireless control, Tesla anticipated technologies that would later become central to robotics and autonomous machines.

Obsession With the Number Three

Tesla had intense cleanliness habits and, later in life, developed a fixation with the number three. Accounts describe him counting steps and preferring hotel rooms with numbers divisible by three.