In 1900, Nikola Tesla received US patent No. 645, 576 for the technology of wireless electricity transmission.
Tesla's experiments in this area are still shrouded in a veil of secrecy, and yet, in different versions, this technology has been used for more than a decade. Largely thanks to the research of the great Serb.
In his experiments, Tesla used electrostatic induction, where an electric field was created by charging the plates with an alternating current of high frequency and high potential. The capacitance between the two electrodes and the powered device created a potential difference. The electrical energy transmitted by electrostatic induction was used by Tesla, for example, to make wireless lamps work.
But his plans were much grander - the Worldwide Wireless System. Tesla saw the purpose of its creation as a combination of power transmission with radio broadcasting and directional wireless communication, which would allow to get rid of numerous high-voltage power lines and facilitate the interconnection of electricity generating on a global scale. Here, of course, he hurried, and the first element of the system, the Wondercliff Tower, remained unfinished.
However, many people associate the phenomenon of the Tunguska meteorite with Tesla's experiments in the Wondercliff tower. According to this version, the destruction in the taiga was caused by a "short circuit" between the charged atmosphere and the ground. True, how Tesla managed to transfer such an amount of energy over such a distance remains a mystery.
But if we digress from conspiracy and return to technology, then a lot of interesting things will become clear:
In 1964, a helicopter model was demonstrated, which was powered remotely - from a microwave beam.
In 1975 and 1997, experiments on the transfer of several tens of kilowatts of energy over a distance of about one kilometer were successfully completed.
In 2008, Bombardier introduced PRIMOVE, a powerful wireless power system for tram and light rail applications.
In the same 2008, Intel successfully reproduced the experiments of Nikola Tesla in 1894 and the group of John Brown in 1988 on the wireless transmission of energy for the glow of incandescent lamps.
In 2009, the Wireless Power Consortium announced the imminent completion of a new industry standard for low-power induction chargers - the very Qi wireless charger for smartphones that is currently on the market. In the same year, Haier Group introduced the world's first fully wireless LCD TV based on Professor Marina Solyachich's research on wireless power transmission and wireless home digital interface (WHDI).
In 2013, the OLEV wireless rail system was successfully tested in South Korea. Now it is being prepared to enter the market.
These are just a few of the options for implementing the technology that Nikola Tesla developed. And although there is no reason to believe that soon we will finally get rid of wires, research in the field of wireless power transmission will certainly determine the future of technology, energy and all of humanity.