Nikola Tesla (1856–1943) was one of history's most original geniuses and also one of its most eccentric. The combination makes him endlessly fascinating. Here are 10 facts about Tesla that seem almost too extraordinary to be true — but are.
1. He claimed to sleep only 2 hours per night. Tesla famously said he required only 2 hours of sleep, though he took frequent naps. Modern sleep scientists would classify this as polyphasic sleep. His productivity appears to support the claim, though the long-term health cost may have been significant.
2. He had a photographic memory and could visualize machines in 3D before building them. Tesla claimed to be able to design, test, and refine machines entirely in his imagination, running mental simulations and identifying problems before touching a physical component. Engineering colleagues confirmed his completed machines often worked on the first try.
3. He became obsessed with the number 3. Tesla reportedly walked around a block 3 times before entering a building, cleaned his plates with 18 napkins (divisible by 3), and insisted on hotel room numbers divisible by 3. His compulsive behaviors intensified as he aged.
4. He fell in love with a pigeon. In his final years, penniless in a New York hotel, Tesla developed an intense attachment to a white pigeon he fed in Bryant Park. He wrote: 'I loved that pigeon as a man loves a woman, and she loved me.' When she died, he said 'something went out of my life.'
5. He demonstrated wireless power transmission over 25 miles. His Wardenclyffe Tower project (1901-1917) aimed to transmit electrical power wirelessly through the Earth. While it was never completed, he successfully lit 200 light bulbs wirelessly in Colorado Springs in 1899.
6. J.P. Morgan funded and then killed his most ambitious project. Morgan initially funded Wardenclyffe Tower for radio communication, but withdrew funding when he realized Tesla intended to transmit power freely to anyone with a receiving antenna — eliminating the ability to sell electricity.
Frequently Asked Questions
Did Tesla really sleep only 2 hours?
Tesla claimed to sleep about 2 hours per night, supplemented by naps. Whether strictly accurate, his documented productivity supports unusually low sleep requirements. Some researchers suggest he may have been a natural polyphasic sleeper.
Why did Tesla die poor?
Tesla's business sense was poor, he trusted the wrong partners (including J.P. Morgan), lost most of his patent income, and made costly investments in projects that were never commercialized. Meanwhile Edison and Westinghouse built profitable businesses on the electrical systems Tesla invented.
