Electricity with no wires !!

Witricity is a word which may not be familiar to you. It is actually the combination of two words, Wireless and Electricity. So i think you already got the idea what witricity is. Well YES !! But let me mention here that it is not the transmission of electricity but actually transfer of it. We dont use whole word ‘Wireless Electricity’ because its too long, you can save time by just saying Witricity. In 1891, an American electrical engineer, a mad genius, Nikola Tesla actually made an early version of fluorescent bulb to glow with no wires connected to it and claimed that electricity can flow through air with two metal sheets on either side of it. That was the start of witricity. In 2007, MIT scientists were able to glow a 60W bulb at a distance of 7 feet. Trust me, this idea will totally revolutionise the electronics industry. You wont be needing any wires in the future i can bet. Also, it will open a whole new field for Electrical engineers. *cheerz*

This phenomenon is actually based on Electro-magnetism and magnetic coupling. You see, we all studied in our Fsc/A levels that we can create magnetic field via time varying electric field. Similarly vice versa. This technique is used in transformers. Same technique is also being used here. All you have to do is, resonate a coil on a particular high frequency. When current will flow through it, it will produce time varying magnetic field. At some distance, place a coil resonating with exactly the SAME frequency. That magnetic field will produce electric field and there you go … no wires ! It is not that simple though because scientists have been working on this for very long time like 100 years but then due to complications, they kept on delaying it. Still, it has some limitations. Like distance is a main factor. Your receiving coil must be within range of 2-3 meters . And about efficiency ? Well 40-45% which is equivalent to that of batteries.

An idea of Witricity

But plus point is, it is totally harmless. No radioactive waves or anything hence no tumours. If you think it is harmful, then you should also stop listening to radio because it is the same thing. Just radio waves. It has many benefits. E.g. in medical field, when you place a catheter(medical instrument related to heart) in a person’s body, after few years, you have to recharge it. So you have to extract it again. But if you use this technique, just a receiving device in catheter and there you go.  Whenever you need to recharge it, just turn the primary coil on and stand near it. It will recharge. You can watch television without wires, you can recharge your electric car (which are not yet here in Paksitan), you can recharge your laptop with it, you wont have to wake up in middle of a night just to plug in your mobile to charge it and also just insert rechargeable cells in a TV remote and trust me, your remote will expire before your rechargeable cells. Isn’t technology beautiful ?