A World Wireless System In The Making

Wireless electricity is a reality and will be more prevalent in the coming years. Yes, you read that correctly. Our household devices will no longer need wires, and the use of batteries may wane in due time.

A company called WiTricity Corp. was founded in 2007. WiTricity Corp. was founded by Prof. Soljačić, a Croatian physicist, and several of his colleagues from MIT. The purpose of the company is to commercialize technology for wireless electricity.

It was in 2007 when Marin Soljačić and his assistants successfully made the first efficient non-radiative power transfer at a distance of 2 meters turning on a 60 W light bulb. Soljačić and his group focused on short-range transfer, while Tesla had concentrated his efforts on long-range transfer of energy.

Nikola Tesla spoke of wireless energy decades ago before the world was wired. He would certainly be smiling if he knew his dream was realizing, although he more than likely knew it was going to happen eventually, even if the dream was a century ahead of its time. This is beyond imagination.

The most common form of wireless power is by using direct induction followed by resonant magnetic induction.

In 1891 and 1892, Tesla gave lectures in New York and London, using a transformer that he invented. Tesla proved that wireless energy was possible.

In 1896 Tesla demonstrated wireless transmission over a distance of about 30 miles (48 kilometres).

Nikola Tesla takes the first step towards a wireless system on May 20, 1891:

… I suspend a sheet of metal a distance from the ceiling on insulating cords and connect it to one terminal of the induction coil, the other terminal being preferably connected to the ground. Or else I suspend two sheets as illustrated in Fig. 29 / 125, each sheet being connected with one of the terminals of the coil, and their size being carefully determined. An exhausted tube may then be carried in the hand anywhere between the sheets or placed anywhere, even a certain distance beyond them; it remains always luminous.