Bibliography
Sources and Annotated Bibliography
The site is built from a source hierarchy: patents and dated Tesla texts first, contemporary accounts second, modern context sources third, and quote aggregators only as evidence of modern circulation.
How to use this bibliography
Each page on Tesla Vibration links to the sources that support its claims. This page gathers those links and adds short notes about what each source can and cannot prove. The distinction is important because the Tesla vibration topic mixes different evidence classes: technical patents, periodical articles, later reminiscence, popular press, modern physics, and social quote culture.
The most important boundary is between source of a claim and proof of a claim. The 1935 controlled-earthquake article is a source for Tesla's later claim and press framing. It is not, by itself, proof that a device caused a real earthquake. Likewise, a Goodreads quote page is a source for the modern existence of a quote meme. It is not proof that Tesla said it.
Primary and near-primary sources
Patent / 1894-01-02
U.S. Patent 511,916, Electric Generator
Nikola Tesla, Google Patents. Primary patent for a reciprocating engine element directly moving a generator element.
Suggested citation: Nikola Tesla, "U.S. Patent 511,916, Electric Generator," Google Patents, 1894-01-02.
Patent / 1894-02-06
U.S. Patent 514,169, Reciprocating Engine
Nikola Tesla, Google Patents. Primary patent for the air-spring reciprocating engine usually tied to the oscillator story.
Suggested citation: Nikola Tesla, "U.S. Patent 514,169, Reciprocating Engine," Google Patents, 1894-02-06.
Patent / 1896-09-22
U.S. Patent 568,176, Apparatus for Producing Electric Currents of High Frequency and Potential
Nikola Tesla, Google Patents. A later high-frequency apparatus patent useful for separating real frequency work from meme claims.
Suggested citation: Nikola Tesla, "U.S. Patent 568,176, Apparatus for Producing Electric Currents of High Frequency and Potential," Google Patents, 1896-09-22.
Periodical article / 1895-04-01
Tesla's Oscillator and Other Inventions
Thomas Commerford Martin, Century Magazine via Tesla Universe. Contemporary popular account of Tesla laboratory work, the oscillator, and the famous Mark Twain photograph context.
Suggested citation: Thomas Commerford Martin, "Tesla's Oscillator and Other Inventions," Century Magazine via Tesla Universe, 1895-04-01.
Newspaper report / 1935-07-11
Tesla's Controlled Earthquake
New York American, Tesla Research transcription. Press report from Tesla birthday coverage describing telegeodynamics and a controlled-earthquake claim.
Suggested citation: New York American, "Tesla's Controlled Earthquake," Tesla Research transcription, 1935-07-11.
Article / 1919-05-01
The True Wireless
Nikola Tesla, Electrical Experimenter via Early Radio History. Tesla retrospective on wireless, oscillators, and high-frequency generation.
Suggested citation: Nikola Tesla, "The True Wireless," Electrical Experimenter via Early Radio History, 1919-05-01.
Article / 1900-06-01
The Problem of Increasing Human Energy
Nikola Tesla, Century Magazine via Tesla Science Center. Primary Tesla essay that includes wireless-energy ambitions and broad philosophy of energy.
Suggested citation: Nikola Tesla, "The Problem of Increasing Human Energy," Century Magazine via Tesla Science Center, 1900-06-01.
Lecture / 1892
Experiments with Alternate Currents of High Potential and High Frequency
Nikola Tesla, Project Gutenberg. Tesla lecture on high-frequency electrical phenomena before the later internet quote-meme era.
Suggested citation: Nikola Tesla, "Experiments with Alternate Currents of High Potential and High Frequency," Project Gutenberg, 1892.
Context, physics, and modern quote-trail sources
Primary-source guide / 2018-06-01
Mark Twain in Nikola Tesla's Lab
IEEE Reach, IEEE Reach. Identifies the 1894 lab photograph and points to the 1895 Century article pages.
Suggested citation: IEEE Reach, "Mark Twain in Nikola Tesla's Lab," IEEE Reach, 2018-06-01.
Physics explainer / 2021-09-21
A New Harmony: NIST Researchers Develop a Universal Method for Calculating Resonance
National Institute of Standards and Technology, NIST. Modern source for natural or resonance frequency and why oscillators are sensitive probes.
Suggested citation: National Institute of Standards and Technology, "A New Harmony: NIST Researchers Develop a Universal Method for Calculating Resonance," NIST, 2021-09-21.
Physics textbook / 2023
Forced Oscillations and Resonance
Michigan State University Open Textbooks, MSU Open Books. Modern textbook source for natural frequency, damping, and large-amplitude resonance.
Suggested citation: Michigan State University Open Textbooks, "Forced Oscillations and Resonance," MSU Open Books, 2023.
Engineering history / 2024
Tacoma Narrows Bridge: Failure
Washington State Department of Transportation, WSDOT. Engineering history source used carefully because Tacoma Narrows was flutter, not simple resonance.
Suggested citation: Washington State Department of Transportation, "Tacoma Narrows Bridge: Failure," WSDOT, 2024.
Historical article / 2023-04-27
Nikola Tesla and the Tower That Became His 'Million Dollar Folly'
Gilbert King, Smithsonian Magazine. Context for Wardenclyffe, J. P. Morgan, and Tesla wireless ambitions.
Suggested citation: Gilbert King, "Nikola Tesla and the Tower That Became His 'Million Dollar Folly'," Smithsonian Magazine, 2023-04-27.
Institutional overview / 2024
Tesla's Wireless Power
Tesla Science Center at Wardenclyffe, Tesla Science Center. Institutional summary of Colorado Springs and Wardenclyffe wireless-power work.
Suggested citation: Tesla Science Center at Wardenclyffe, "Tesla's Wireless Power," Tesla Science Center, 2024.
Health evidence overview / 2024
Reiki: What You Need To Know
National Center for Complementary and Integrative Health, NCCIH. Used only to separate physics vocabulary from unsupported energy-field health claims.
Suggested citation: National Center for Complementary and Integrative Health, "Reiki: What You Need To Know," NCCIH, 2024.
Quote aggregation / 2026
Nikola Tesla quote page for the energy-frequency-vibration line
Goodreads community, Goodreads. Example of the modern unattributed quote circulating without primary citation.
Suggested citation: Goodreads community, "Nikola Tesla quote page for the energy-frequency-vibration line," Goodreads, 2026.
Popular explainer / 2026
The Mystical Meaning of 369 and Its Link to Nikola Tesla
Mental Floss, Mental Floss. Example of current internet framing that labels the 3-6-9 line as alleged or rumored.
Suggested citation: Mental Floss, "The Mystical Meaning of 369 and Its Link to Nikola Tesla," Mental Floss, 2026.
Citation-ready blocks
The following short blocks are written to be quotable without overstating the evidence. They are intentionally conservative.
Known source gaps
This site does not claim to identify the first internet appearance of the 3-6-9 quote. It also does not claim to exhaust every Tesla letter, notebook, or archive item. The conclusion is narrower: the common viral wording is not supported by the checked primary sources, and therefore should not be quoted as Tesla.
Future improvements should prioritize archival Tesla Museum materials, dated newspaper databases, and quote-history work that can show earlier appearances of the 3-6-9 wording. Until then, conservative attribution is the only honest route.
For answers organized by question, read the FAQ. For chronology, read the timeline.