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UK researchers say they have achieved data transmission speeds of 10Gbit/s via "li-fi" - wireless internet connectivity using light.
The researchers used a micro-LED light bulb to transmit 3.5Gbit/s via each of the three primary colours - red, green, blue - that make up white light.
This means over 10Gbit/s is possible.
Li-fi is an emerging technology that could see specialised LED lights bulbs providing low-cost wireless internet connectivity almost everywhere. Networking Via a Light Bulb: "LiFi" Achieving 10Gbit/s [bbc.co.uk]
...and the transmitter and receiver is likely to be a narrower bandwidth...