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Wireless data from every light bulb

science24science24 Posts: 987 ✭✭✭✭✭
What if every light bulb in the world could also transmit data? Prof Harald Haas demonstrates, for the first time, a device that could do exactly that. By flickering the light from a single LED, a change too quick for the human eye to detect, he can transmit far more data than a cellular tower and do it in a way that's more efficient, secure and widespread.



  • [Ex Member][Ex Member] Posts: 1,190 ✭✭✭✭
    I would need a bulb transmitting Arabic words directly to my grey matter. :)
  • [Ex Member][Ex Member] Posts: 1,190 ✭✭✭✭
    "Li-fi promises to be cheaper and more energy-efficient than existing wireless radio systems given the ubiquity of LED bulbs and the fact that lighting infrastructure is already in place.

    Visible light is part of the electromagnetic spectrum and its bandwidth is 10,000 times bigger than the radio frequency spectrum used by existing communication systems, affording vastly greater capacity.

    Another advantage, Prof Haas argues, is that evenly spaced LED transmitters could provide much more localised and consistent internet connectivity throughout buildings."
  • mheredgemheredge Posts: 38,154 ✭✭✭✭
    Does this mean that teachers won't be needed? Will it be possible to sit the students in a room and let the light bulb do all the work of transmitting information?
  • mheredgemheredge Posts: 38,154 ✭✭✭✭
    I hope these advances might come sooner @zapppsr‌, especially when it comes to energy. Batteries and electricity is the bane of my existence, especially when I'm in Kathmandu!
  • zapppsrzapppsr Posts: 231 ✭✭✭
    Wow! Kathmandu? I only hear this name on movies. Do you really go there @mheredge?
  • kindgnicekindgnice LEO Motivator!!! Posts: 7,953 mod
    edited April 2016
    I hope this technology could also transmit data. ;)

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