Thanks very much HERALD HASS for uploading this video on youtube .... I have taken this topic as my Technical seminar in my final year engineering... thumps up ;) and what u have explained is Flawless ;)
Interesting how technologists dismiss the safety concerns of digital communications systems, saying "there is no scientific evidence of harm." When in fact there is ample evidence.
This is fascinating technology and I expect to see it explode in production and implementation. I was wondering, why was ir used for transmitting data back? Is there a problem with transmitting a message back using light? Would it be possible to transmit at different frequencies for up/down link? -For example you send 1 million flickers/sec for upload & 2 million flickers/sec for download? Or is the nature of light such that the signals would be misread under these conditions? Perhaps better optics are needed to distinguish # of flickers/sec?
Hmmm I'm not sure if I see the need. 3G goes through walls better than light does which means less infrastructure is needed. There may be less radio spectrum than light but there's enough that people in such high density areas like Times Square or a busy venue can still get adequate data coverage. You want to use light, use lasers to beam down from satellites to ground stations and blanket large areas with 3G from there. As for speed, there are already wifi routers that can transfer at 1GB per second. Maybe there's something here but it seems needing light could be a major reliability problem. He does make a good point about using to transmit underwater. Underwater transmission is a major challenge since it requires by low frequencies which can't transmit high throughput.
+Nicholas Moore Where this is going to come in handy, more than just being very fast, is available bandwidth. More devices can be connected at the same time without slowing the connection. Also, if this technology only uses visible light, it would be good for secure locations like government facilities or data warehouses BECAUSE it wont go through walls.
+Nicholas Moore "Hmmm I'm not sure if I see the need. 3G goes through walls better than light does" How exactly light goes through walls? Also its not ment to replace the 3g/4g/wi-fi completely. But it will have a huge impact on the future.
+lozanov95 My point exactly, it's not going through physical objects which means it's less practical Saying its going to impact the future is not an argument, it's a statement without any support.
Do you even watched the whole video? It's serving another propose than wifi/4g. And its more cost-efficient and safer for the nature and us(people). Also in the future it can be expanded to something we can't even imagine. Like the computers when they were originaly invented. Who would've imagined how necessary are they in our everyday's life
LiFi is already available as prototype from pureLiFi. There's a standard from IEEE to finished in 2017, after which all the LiFi companies will apply in their products for general release.
why didnt he answer the distance question ? ...... yes there has been concern about using LED's in the house (if you goof LED light health risks, plenty of articles.). With regards to RF health risks, the documentary 'Resonance' was damning............. does anyone know of any useful products that are actually using this tech.?
Prof. Harald Haas - My Li-Fi Revolution. In the 2014 Tam Dalyell Lecture, Professor Harald Haas, Chair of Mobile Communications at The University of Edinburgh, reveals an amazing innovation that could change wireless communications forever. The Li-Fi system uses standard light-emitting diodes (LEDs) to transmit electronic data signals, which will enable users to access the internet through the ordinary lighting systems in schools, workplaces and homes. This revolutionary invention has the potential to bring cheap, energy efficient and super-secure wireless access to the world. Recorded on Sunday 13 April at the University of Edinburgh's Playfair Library.
Hi sir ! I am last year student of enginnering from india Here i will build project i.e. data sharing using lifi i need list of hardware compnent and circuit diagram to implement this proect i hope you will help me. with regards.
its all good, but does anyone see the need for it? wifi is a nice complement to 4g outdoors... and with 5g in door speeds will be in the gigabits anyway * ?... Seriously, the level of additional equiptment needed to retrofit a whole house with lights that cover every area (to stop dropping signal) would be huge * ! and expensive, how much did it cost to refit all the leds in your home? let me guess.. a couple of hundred pounds / dollars ? so this would be the same. not to mention, in the near future people wont go into a building and use their wifi they will just use 4g, because it will be faster, there will be no lengthy connection time / password issues... AND most importantly the 4g won't be snooped upon, whereas the network traffic can be clearly seen by the host of the lifi network * Any problems with my criticism ? if so, please comment..
+shreddedreams may be you have already high speed internet but in my country the highest speed is 2.4 mega per second my current internet speed is 0.2 mega per second so this light technology will improve the internet way more than what we imagined 2nd it will be every where and will save energy 3rd why you wait for 5g in door speed , man lifi can transfere data up to 224GB/sec
alienkishorekumar Whatever the exact words are, mobile phones are not an essential service in the way that light, water, and electricity are. I realize that people like to believe/think mobile phones are essential, but they aren't and they do a lot of harm.
Barb Payne Mobile phones cause radiation which might be carcinogenic(cancer causing) but Radio waves are non-ionising but yes, they do have cellular level interaction which causes men to become impotent and some people even to develop cancer. But the research done so far has shown no such correlation. It's just that radio waves don't cause any harm. Are mobile phones essential? Not really.
alienkishorekumar Through my volunteer work, I interact with thousands of people whose health and quality of life are mildly to severely impaired because of the skyrocketing levels of the non-natural types of non-ionising radiation. There are over 20 000 research studies that certainly do show that these types of non-ionising radiation cause reactions inside every human (and other fauna and flora), reactions that would not occur in the absence of that radiation. Certainly, as with any chemical or physical agent, and as with any type of natural source or non-natural source of other types of non-ionising radiation, some individuals in any species will be affected differently and in varying ways by those reactions. Too much water can be a bad thing; too much sunlight can be a bad thing; and so on. Similarly, if Li-Fi becomes pervasive/invasive in indoor and/or outdoor environments, light is another type of non-ionising radiation, and we know for sure that species react to light and to components of light in ways that can be good and can be bad and can vary from individual to individual and from all sorts of combinations of variables at any moment or always. So Li-Fi from unnatural sources would still be pollution and species would be subjected to firsthand and/or secondhand exposures. Perhaps more species, or fewer species, or different species would be adversely affected by Li-Fi exposures than the species adversely affected by non-light types of non-ionising radiation.
Barb Payne Well, I'm studying Photonics which is a study of light and it's interaction with matter and LED light is the most safest. Yes, it is artificial, but we have made it so much better than radio waves, because light is much safer as it is lower powered i.e., even if the light is ahead in term of frequency in the frequency spectrum, it's much safer because we don't reach higher intensity unlike radio waves. All this said. Yes, light interaction with humans especially from artificial source does affect human brain because it stops the regular sleep cycle and contributes to new neural changes. In the course of human evolution, man will not be the same in 100 years, because cancer is growing at an unprecedented rate due to the fast changes and adaptations to the new changes means change in structure of DNA and DNA manipulations are highly random and unpredictable, so this is dangerous, but we are trying to mitigate even cancer, when this really happens, we basically become god because we are controlling our own destiny. If you either believe in god or not, you should accept the fact that science and technology is changing us and adapting to it is not good in a way, but also unchangeable.
this is download only use for data reception similar to Television but not internet. Although, you can use your current internet connection to upload request and download to that streamer, similar to Chromecast technology.
Thanks very much HERALD HASS for uploading this video on youtube .... I have taken this topic as my Technical seminar in my final year engineering... thumps up ;) and what u have explained is Flawless ;)
A very promising technique for in-door communication of smart furnitures.
Tank you M Harald Haas
thanks mr.Harald Haas .
From fiber optic to led. Genius.
Very nice talk. One of the most interesting events during Edinburgh Science Festival 2014 :D
Looking forward to the next one in 2015 :D
I love the concept, abundant blessing to the inventor!
can more than one person use a lightbulb at the same time?
very impressive to see what light can carry and accomplish.
Big changes to come to us :-)
Great stuff!
Interesting how technologists dismiss the safety concerns of digital communications systems, saying "there is no scientific evidence of harm." When in fact there is ample evidence.
you can use your lamp outside of the house?
All the more reasons we should submit ourselves to new rulers: technocrats.
This is fascinating technology and I expect to see it explode in production and implementation.
I was wondering, why was ir used for transmitting data back?
Is there a problem with transmitting a message back using light?
Would it be possible to transmit at different frequencies for up/down link?
-For example you send 1 million flickers/sec for upload & 2 million flickers/sec for download? Or is the nature of light such that the signals would be misread under these conditions? Perhaps better optics are needed to distinguish # of flickers/sec?
Well, I don't see how can you make an uplink connection with Light. You will need two LEDS and two photodetectors in order to transmit data back.
what about upload speed...
7 years has past, what's the reason behind that not everyone is using it? 🧐
Lots of old people in the crowd.
por favor podrían subtitular en español el video. gracias.
***** Nonsense ..hah! Just note your own words. You would regret.
Hmmm I'm not sure if I see the need. 3G goes through walls better than light does which means less infrastructure is needed. There may be less radio spectrum than light but there's enough that people in such high density areas like Times Square or a busy venue can still get adequate data coverage. You want to use light, use lasers to beam down from satellites to ground stations and blanket large areas with 3G from there. As for speed, there are already wifi routers that can transfer at 1GB per second. Maybe there's something here but it seems needing light could be a major reliability problem. He does make a good point about using to transmit underwater. Underwater transmission is a major challenge since it requires by low frequencies which can't transmit high throughput.
+Nicholas Moore Where this is going to come in handy, more than just being very fast, is available bandwidth. More devices can be connected at the same time without slowing the connection. Also, if this technology only uses visible light, it would be good for secure locations like government facilities or data warehouses BECAUSE it wont go through walls.
+Nicholas Moore "Hmmm I'm not sure if I see the need. 3G goes through walls better than light does" How exactly light goes through walls? Also its not ment to replace the 3g/4g/wi-fi completely. But it will have a huge impact on the future.
+lozanov95 My point exactly, it's not going through physical objects which means it's less practical Saying its going to impact the future is not an argument, it's a statement without any support.
Do you even watched the whole video? It's serving another propose than wifi/4g. And its more cost-efficient and safer for the nature and us(people). Also in the future it can be expanded to something we can't even imagine. Like the computers when they were originaly invented. Who would've imagined how necessary are they in our everyday's life
When Li-Fi will release ?
And how much it cost ?
LiFi is already available as prototype from pureLiFi. There's a standard from IEEE to finished in 2017, after which all the LiFi companies will apply in their products for general release.
If two persons using internet in a room by li fi then any one of them can steal the data .so how secure this?
why didnt he answer the distance question ? ...... yes there has been concern about using LED's in the house (if you goof LED light health risks, plenty of articles.). With regards to RF health risks, the documentary 'Resonance' was damning............. does anyone know of any useful products that are actually using this tech.?
29:15 What kind of LED have just only 5mW consumption ? I know than mW are standart for Laser Diodes, but also units mW for LED?
+ Filo2Th using pwm to control the pulse width and send signals simultaneiusly, maybe is the reason why the led 's power consumption is so low.
+Filo2Th it's keep twinkling but you cant sense that high frequency by your eyes..
Prof. Harald Haas - My Li-Fi Revolution. In the 2014 Tam Dalyell Lecture, Professor Harald Haas, Chair of Mobile Communications at The University of Edinburgh, reveals an amazing innovation that could change wireless communications forever.
The Li-Fi system uses standard light-emitting diodes (LEDs) to transmit electronic data signals, which will enable users to access the internet through the ordinary lighting systems in schools, workplaces and homes. This revolutionary invention has the potential to bring cheap, energy efficient and super-secure wireless access to the world.
Recorded on Sunday 13 April at the University of Edinburgh's Playfair Library.
Italian Meucci invented the telephone not Bell ! en.wikipedia.org/wiki/Antonio_Meucci
Hello Any one Now how it work with multiple users ?
+B. Youssef
Watch the fucking video.
lol
Not Revolution...basicly Lifi like F.O system. differnt in medium. Lifi medium is air. F.O medium is fiber.
Hi sir !
I am last year student of enginnering from india
Here i will build project i.e. data sharing using lifi
i need list of hardware compnent and circuit diagram to implement this proect
i hope you will help me.
with regards.
+Santosh Yadav oh ! me to .. I need it
+Lina Mohsen انا هندسه حلوان ومشروعي عن الاي فاي ... ممكن نتواصل للافاده ؟
+omar ali اتمنى لو عند حضرتك اي وسيلة للإفادة لانه بصراحة انا اللي محتاجة الداتا عشان المشروع ^^!
+omar ali lina.mohsen.eltanamly@gmail.com send me a message
+Lina Mohsenممكن تتواصلي معايا ع الياهو عشان مش بعرف اتعامل مع الجميل
omar.ali9976@yahoo.com
SISOFT OF MEXICO DEVELOP BETTER THE LIFI INTERNET WERE YOU CAN DOWNLOAD IN 35 SEC A MOVIE PLUS MORE.....
LI-FI?
its all good, but does anyone see the need for it? wifi is a nice complement to 4g outdoors... and with 5g in door speeds will be in the gigabits anyway *
?...
Seriously, the level of additional equiptment needed to retrofit a whole house with lights that cover every area (to stop dropping signal) would be huge * ! and expensive, how much did it cost to refit all the leds in your home? let me guess.. a couple of hundred pounds / dollars ? so this would be the same.
not to mention, in the near future people wont go into a building and use their wifi they will just use 4g, because it will be faster, there will be no lengthy connection time / password issues... AND most importantly the 4g won't be snooped upon, whereas the network traffic can be clearly seen by the host of the lifi network *
Any problems with my criticism ? if so, please comment..
+shreddedreams , yes is the only way to send huge data from Earth to Moon and back in few minutes.
yes but 99% of society is not requiring those space-related applications !
As long as NASA is in the 1% it will be a pleasure to watch the transmision live on youtube for the others 99%, don't you agree?
And radio transmisions are more dangerous then light.
+shreddedreams may be you have already high speed internet but in my country the highest speed is 2.4 mega per second my current internet speed is 0.2 mega per second so this light technology will improve the internet way more than what we imagined
2nd it will be every where and will save energy 3rd why you wait for 5g in door speed , man lifi can transfere data up to 224GB/sec
What a ridiculous thing to say ... that mobile phones are more important than light, water, and electricity.
You missed the line, he said "like" light water, and electricity, he corrected himself. Don't jump in before listening carefully.
alienkishorekumar Whatever the exact words are, mobile phones are not an essential service in the way that light, water, and electricity are. I realize that people like to believe/think mobile phones are essential, but they aren't and they do a lot of harm.
Barb Payne Mobile phones cause radiation which might be carcinogenic(cancer causing) but Radio waves are non-ionising but yes, they do have cellular level interaction which causes men to become impotent and some people even to develop cancer. But the research done so far has shown no such correlation. It's just that radio waves don't cause any harm.
Are mobile phones essential? Not really.
alienkishorekumar Through my volunteer work, I interact with thousands of people whose health and quality of life are mildly to severely impaired because of the skyrocketing levels of the non-natural types of non-ionising radiation. There are over 20 000 research studies that certainly do show that these types of non-ionising radiation cause reactions inside every human (and other fauna and flora), reactions that would not occur in the absence of that radiation. Certainly, as with any chemical or physical agent, and as with any type of natural source or non-natural source of other types of non-ionising radiation, some individuals in any species will be affected differently and in varying ways by those reactions. Too much water can be a bad thing; too much sunlight can be a bad thing; and so on. Similarly, if Li-Fi becomes pervasive/invasive in indoor and/or outdoor environments, light is another type of non-ionising radiation, and we know for sure that species react to light and to components of light in ways that can be good and can be bad and can vary from individual to individual and from all sorts of combinations of variables at any moment or always. So Li-Fi from unnatural sources would still be pollution and species would be subjected to firsthand and/or secondhand exposures. Perhaps more species, or fewer species, or different species would be adversely affected by Li-Fi exposures than the species adversely affected by non-light types of non-ionising radiation.
Barb Payne
Well, I'm studying Photonics which is a study of light and it's interaction with matter and LED light is the most safest. Yes, it is artificial, but we have made it so much better than radio waves, because light is much safer as it is lower powered i.e., even if the light is ahead in term of frequency in the frequency spectrum, it's much safer because we don't reach higher intensity unlike radio waves.
All this said. Yes, light interaction with humans especially from artificial source does affect human brain because it stops the regular sleep cycle and contributes to new neural changes.
In the course of human evolution, man will not be the same in 100 years, because cancer is growing at an unprecedented rate due to the fast changes and adaptations to the new changes means change in structure of DNA and DNA manipulations are highly random and unpredictable, so this is dangerous, but we are trying to mitigate even cancer, when this really happens, we basically become god because we are controlling our own destiny. If you either believe in god or not, you should accept the fact that science and technology is changing us and adapting to it is not good in a way, but also unchangeable.
It's all good to Download stuff. But what about uploading stuff? Check Mate.
+ShadowEagle you upload by the same speed
+ShadowEagle the thing goes both ways.
+Lai Chong no you didn't get it the li-fi comes from the light bulb but what about the device?
this is download only use for data reception similar to Television but not internet. Although, you can use your current internet connection to upload request and download to that streamer, similar to Chromecast technology.
:-)
treemendous.