Li-Fi is a new technology that uses visible light communication and LED bulbs to transmit data wirelessly. It provides advantages over Wi-Fi such as higher speeds, lower latency, increased security, and an unlimited spectrum. Li-Fi works by varying the intensity of LED lights to transmit data, with on representing 1 and off representing 0. Researchers have achieved speeds up to 10 Gbps in testing, over 100 times faster than average Wi-Fi speeds. Li-Fi could enable high-speed internet access anywhere there is light and help make the Internet of Things a reality.

2. By-
Ketan
Shete

3. Dr John O'Sullivan
Founder OF Wi-Fi

4. Advantages:-
 Wireless!!!!!
 Laptops can move From one place to another
 Can stream files from one computer to another
 Range is not limited

5. Dis-advantages:-
 Security!
 Installation Problems
 Coverage
 Speed
 Power Consumption
 Signals can travel through walls

6. How do we improve this
technology and solve these
problems? Which is-
 Cheap
 Safer
 Reliable for data transfer
 Plentiful
 Easy to install and use

7. The only answer to these is!!!!!!
 LIGHT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Because –
 Its just a part of electromagnetic spectrum
 Just as radio waves but at much high
frequency
 Frequency 10,000 greater than radio waves
higher frequency higher data transfer rates

8. This is collected together in only
one thing!!!!!!!!!!!!! i.e-

9. Invented by-
Professor Harald Haas

10. What is Li-Fi-
 Li-Fi is transmission data through illumination,
sending data through LED light bulb varies in
intensity that human eye can follow.

11. Hoe it works?
 Its very simple-
 If Led is on you transmit a digit 1,if its off you
transmit a 0.The LED’s can be switched oon
and off very quickly, which give nice
opportunities of transmitting data
 Hence all that us requires are LED’s and a
controller that code the data into LED
 Every light source will work as an hub

12. Example:-
Remote of a TV

13. So what we can do with the
Technology is that-

14. So What Happens-

15. So do we need to keep the lights
on 24*7??
Yes!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!
But-

16. Speed-
 Researchers have reached 10 gbps in
lab conditions.
 For example south korea world recorded
internet speed is-
100 mbps

17. But whats the speed of Li-Fi
its- 10 Gbps therotically proved
100 times faster than current
average Wi-Fi speeds………..

18. Researches-

19. So what we can do with that
speed!!!!!!
So amazing thing is that you can download
18 (1.5 Gb) movies
in only ONE second
:-P

20. Conclusion-
 So we can setting very light power internet
EVERYWERE this could become the
INTERNET OF THINGS THE
REALITY!!!!!!!!!!!!!
 In this way information transfer will be no
longer obstacle in world

21. Any Questions?