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| | PowerPedia:Nikola Tesla - PESWiki |
 | | He developed various devices that use rotating magnetic fields, the fundamental devices and systems of wireless communication (legal priority for the invention of radio), radio frequency oscillators, devices for voltage magnification by standing waves, robotics, devices for x-rays, and devices for ionized gases. |
 | | Tesla later developed devices for high field emission, devices for charged particle beams, methods for providing extremely low level of resistance to the passage of electrical current, means for increasing the intensity of electrical oscillations, voltage multiplication circuitry, devices for lightning protection, and the VTOL aircraft. |
 | | At the time of his death, Tesla had been working on some form of teleforce weapon, or death ray, the secrets of which he had offered to the United States War Department on the morning of 5 January. |
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