Magnetism: A fundamental force of nature, which causes certain types of materials to attract or repel each other. A convenient way for energy to get from one place to another! The flow of electrons (current) through a conductor (like a wire), or charges through the atmosphere (like lightning). Transmission of electrical energy from one object to another without the use of wires is called as WiTricity. WiTricity is a portmanteau for ‘wireless electricity’. Even better, because of WiTricity some of the devices won't require batteries to operate. WiTricity ensures that the cell phones, laptops, iPods and other power hungry devices get charged on their own, eliminating the need of plugging them in. WiTricity is nothing but wireless electricity. Requirement of uninterrupted line of sight (obstacles hinder the transmission process). Pawan Kumar (Electronicss Instrum Instrumentation & Control Engg.) And in tthe he case of lasers, apart from
However, radio waves are not feasible for power transmissions because the nature of the radiation is such that it spreads across the place, resulting into a large amount of radiations being wasted. In addition, lasers have also been used to transmit energy without wires.
Moreover, we all are aware of the use of electromagnetic radiation (radio waves) which is quite well known for wireless transfer of information. Nikola Tesla was the first to experiment with wireless electricity, but ultimately failed after losing his key financial backing in the late 1800's. Further, in 2005, Dave e Gerding coined the term WiTricity which is being used by the MIT researchers today. As it is in Radiative mode, most of the Power was wasted and has less efficiency. In fact it dates back to the 19th century, when Nikola Tesla used conduction based systems instead of resonance magnetic fields to transfer wireless power. And these have definitely increased the standard of living. Cordless mouse, cordless keyboard, satellite communication, mobiles, cordless microphones and headphones, wireless reless internet service i.e. Almost each and everything is wireless or cordless. Wireless communication has made the world smaller. Today, as we can see the word ‘wireless’ is common in day – to – day life. And with this there started a new era called WIRELESS TECHNOLOGY. Thereafter an Italian scientist named Marconi succeeded in transmitting electromagnetic waves up to a distance of several miles. Sir Jagdish Chandra Bose successfully generated electromagnetic waves having wavelength in the range of 5mm to 25 mm. But a renaissance occurred with the invention of Electromagnetic Waves by Maxwell. There are certain small but very useful discoveries made in history, which changed the world forever, r, Newton’s gravitational law, Watt’s steam engine, Thomson’s bulb and many more. The continuous research and development has brought forward a major breakthrough, which provides electricity without the medium of wires. The major source of conventional form of electricity is through wires. In this era of modernization, n, electricity has become the unavoidable part of life.
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