Scientists set new record for data transmission using li-fi

lifi_environmentBack in November 2015, a wireless technology called li-fi made a splash, proving to be 100 times faster than average wi-fi speeds in its first ‘real world’ tests.

Unlike wi-fi, which is based on radio frequencies, li-fi uses a much faster system based on visual light, and researchers in Saudi Arabia have just developed a lightbulb that can transmit data more than 40 times faster than any existing li-fi devices.

The invention of li-fi has been credited to Scottish communications expert Harald Haas from the University of Edinburgh, when he demonstrated for the first time back in 2011 that by flickering the light from a single light-emitting diode (LED), he could transmit far more data than a cellular tower.

The technology is based on something called Visible Light Communication (or VLC), which piggy-backs on visible light frequencies between 400 and 800 terahertz (THz).

Using these light frequencies, li-fi works like an incredibly complex form of Morse code – by flicking an LED on and off at extreme speeds imperceptible to the human eye, you can write and transmit data in binary code.

Read the full article in Science Alert

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