Burning topic1:''Li Fi Technology"

Hello guys from today I am going to start a new series of burning topics that is very important for the exams like IAS HAS public service Commision as well as for hppsc exams. These burning topics will also be helpful for new MCQ questions being asked in various screening tests as well. This burning topics series is very helpful for SBI PO main exam and various clerk exams. Everyone should read these burning topics as they are very informative to catch up with various transitions happening around the world. so folks let's getting started, our today's burning topic is Li Fi Technology

what is lifi the full form of lifi is Light Fidelity ,In this technology as the name suggests, we use light for internet connectivity, it can be an alternative for Wi-Fi in the future.This term was first coined in 2011 by Harald Hass in US Technology Summit. As you all know ,In the world of data transfer,we use bit for the task of data transfer, these bits are in the form of 0 and 1's which are being fluctuated to transfer data. In Wi-Fi we use radio waves being fluctuated in the form of 0 and 1's to transfer data.

In lifi Technology same 0 and 1's bits of data are used but we use  LED bulb lighting to provide internet using lifi Technology. This light also fluctuates in the form of 0 and 1's but this fluctuates about 1 million times in one second that we cannot notice fluctuation in the light. The speed of data in lifi is more than Wi-Fi. For using this technology, special LED lifi lights are to be setup in the roof.This is costly at the moment. So this cannot be used effectively in the rural areas at the present moment because of less budget in India. we have to use  Dongal with sensitive Photon detector to sense fluctuation in the light in the form of 0 and 1's.

some of its disadvantages are :

1.     cannot be used in the sunlight as frequency of Sunlight interfere with the LED light frequency

2.    very costly at the moment only big corporate houses of Europe and America are using it at present.

3.    cannot be used in the dark ,hence cannot be used in rural areas with less electricity.

Biggest advantage of LIfi: It is 100 times faster than radio frequency Wifi with a speed of about 224Gbits/sec.

So with some improvements in this technology in the future, it can become another internet alternative. The good thing is that it can be used anywhere in the office or Conference Hall under LED lights.
It is also environment-friendly as a higher frequency of radio waves in today's world is harmful.