How does Wi-Fi wirelessly send information through the air?

Wi-Fi sends information through the air by using radio waves, like how your voice carries messages when you talk to a friend across the room.

Imagine you and your friend are playing a game with flashlights in a dark room. When you want to send a message, you turn your flashlight on and off in patterns, on, off, on, off. Your friend sees this pattern and knows what you're saying. That's kind of how Wi-Fi works, but instead of flashlights, it uses radio waves.

The Wi-Fi router acts like a flashlight that sends out patterns of radio waves, these are like invisible messages in the air. Your phone or computer is like your friend, listening for those signals and translating them into information you can see on the screen, like videos or games.

When you click on a video, the router turns its "flashlight" on and off really fast to send all the bits of that video across the room, or even across town, through the air. Your phone receives these radio waves and changes them back into the picture you're watching.

It's like sending invisible postcards through the air, one after another!