1897, he made Marconi's radio communication theory come true. 1898, he built the world's first radio-controlled ship and obtained a patent for radio control technology. 1899, he invented the x-ray photography technology. Other inventions include: radio, radar, fax machine, vacuum tube, neon tube, missile navigation, interstellar defense system and so on.
Extended data
Artificial lightning
1899, Tesla conducted research in Colorado springs.
In the laboratory, Tesla successfully made artificial lightning.
Tesla observes lightning and studies atmospheric electricity through his receiver.
Tesla studies how to transmit energy and electricity wirelessly. According to his own experiments and discoveries, he calculated that the frequency of the earth's vibration was close to 8 Hz. In 1950s, researchers confirmed that the cavity resonance frequency of the ionosphere was within this range (later called Schumann vibration).
Tesla left colorado springs on June 1900. The experiment in Colorado prepared for Tesla's next plan, that is, to build a wireless energy transmission facility, which became Wodenkrifta.