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When the first version of the Wi-Fi protocol was released in 1997, it boasted wireless speeds of up to 2 megabits per second. Now, there’s Li-Fi, a potential successor to Wi-Fi that’s capable of transmitting data at 1 gigabit per second, about 100 times faster than today’s average home wireless connection and 500 times faster than that first incarnation of Wi-Fi.
Li-Fi uses LED bulbs switching on and off billions of times per second to transmit strings of data. Think of the way a Morse code operator would tap out a message, then speed up the process by several orders of magnitude.
Though the communication takes place in the visible spectrum, meaning humans can see the light that’s being emitted, the flickering happens far too fast for our eyes to notice it. In other words, to humans, a Li-Fi light bulb appears like any other…
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