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  2. Violet ray - Wikipedia

    en.wikipedia.org/wiki/Violet_ray

    Another electrode used with the same set. A violet ray is an antique medical appliance used during the early 20th century to discharge in electrotherapy. Their construction usually featured a disruptive discharge coil with an interrupter to apply a high voltage, high frequency, low current to the human body for therapeutic purposes.

  3. Tesla's oscillator - Wikipedia

    en.wikipedia.org/wiki/Tesla's_oscillator

    An oscillator that was among the exhibits Tesla demonstrated at the World's Columbian Exposition in 1893. Tesla's electro-mechanical oscillator is a steam-powered electric generator patented by Nikola Tesla in 1893. [1][2] Later in life Tesla claimed one version of the oscillator caused an earthquake in New York City in 1898, gaining it the ...

  4. Tesla coil - Wikipedia

    en.wikipedia.org/wiki/Tesla_coil

    A Tesla coil is an electrical resonant transformer circuit designed by inventor Nikola Tesla in 1891. [1] It is used to produce high-voltage, low-current, high-frequency alternating-current electricity. [2] [3] Tesla experimented with a number of different configurations consisting of two, or sometimes three, coupled resonant electric circuits.

  5. Communication with extraterrestrial intelligence - Wikipedia

    en.wikipedia.org/wiki/Communication_with...

    Inventor Nikola Tesla mentioned many times during his career that he thought his inventions such as his Tesla coil, used in the role of a "resonant receiver", could be used to communicate with other planets, [13] [14] and that he even had observed repetitive signals of what he believed were extraterrestrial radio communications coming from ...

  6. Nikola Tesla - Wikipedia

    en.wikipedia.org/wiki/Nikola_Tesla

    Order of the White Lion (1937) Signature. Nikola Tesla (/ ˈtɛslə /; [2] Serbian Cyrillic: Никола Тесла, [nǐkola têsla]; 10 July 1856 [a] – 7 January 1943) was a Serbian-American [3][4] engineer, futurist, and inventor. He is known for his contributions to the design of the modern alternating current (AC) electricity supply system.

  7. Colorado Springs Notes, 1899–1900 - Wikipedia

    en.wikipedia.org/wiki/Colorado_Springs_Notes...

    A small coil co-ordinated with 26 subject basic frequency likewise strongly one excited. Colorado Springs Notes, 1899–1900 ( ISBN 8617073527) (Published by Nolit: Beograd, Yugoslavia, 1978) is a book compiled and edited by Aleksandar Marinčić and Vojin Popović detailing the work of Nikola Tesla at his experimental station in Colorado ...

  8. Death ray - Wikipedia

    en.wikipedia.org/wiki/Death_ray

    The death ray or death beam was a theoretical particle beam or electromagnetic weapon first theorized around the 1920s and 1930s. Around that time, notable inventors such as Guglielmo Marconi, [1] Nikola Tesla, Harry Grindell Matthews, Edwin R. Scott, Erich Graichen [2] and others claimed to have invented it independently. [3]

  9. World Wireless System - Wikipedia

    en.wikipedia.org/wiki/World_Wireless_System

    The Wardenclyffe Power Plant prototype, intended by Nikola Tesla to be a "World Wireless" telecommunications facility.. The World Wireless System was a turn of the 20th century proposed telecommunications and electrical power delivery system designed by inventor Nikola Tesla based on his theories of using Earth and its atmosphere as electrical conductors.