Li-Fi Internet

The wi-fi is a big part of our daily lives, however, we sometimes get a little frustrated with it. There are days when I sometimes give a little prayer while I'm waiting for a video to buffer : "Come on WolfieNet, don't fail me!!" (Especially on Saturdays when I only have 10 seconds left to hand in my homework through Blackboard.) Wifi can easily be shared with someone else in another room because it uses radio waves to transmit information. To make wifi better, it needs something of a higher frequency: light. Light is about 100 times faster than radiowaves. We can download 18 1.6GB movies in one second!! Now I don't have to wait hours for that game to download!
Harald Haas, the creator of Li-Fi demostrated on a TedTalk how Li-Fi works. I thought that it was really cool, especially when he put a hand over the reciever to block the light and the video in the back stopped playing because the reciever wasn't able to read any data. By putting his hand away, the reciever was able to read the data and the video continued to play. The bad part of this is that in order for it to work, the light must be on. But with a LED light, we can alter the intensity of the light so that we can dim it so much that the human eye can't detect it but the reciever is able to read it. The best part is that we don't need power in order to have internet, as soon as we turn on the lights, we are able to get li-fi.

Source:https://youtu.be/wqH9KX9o0vg