How WiFi Works - Computerphile?

WiFi is like having a special radio that lets your phone or computer talk to the internet without wires.

Imagine you're playing tag in a big park. You can shout messages across the field so your friend knows where you are. That's kind of how WiFi works, instead of shouting, devices send out tiny radio waves, like invisible whispers, to communicate with each other.

Your router is like a super-powered speaker in the park. It sends out these radio waves, and your phone or computer, acting like a receiver, catches them. That’s how you can stream videos or play games without being plugged into a wall.

When you click on a website, your device sends a message to the router. The router then passes that message along to the internet, it's like having a middle person who helps you talk to friends far away. Then the internet sends back what you need, and your phone or computer gets it through the same radio waves.

So, WiFi is just a clever way for devices to chat with each other using invisible radio waves, kind of like playing tag, but with messages!