How does Wi-Fi transmit data through the air without wires?

Wi-Fi sends messages through the air using radio waves, just like how a walkie-talkie works.

Imagine you and your friend are playing hide-and-seek in a big park. You can’t see each other, but you both have walkie-talkies. When you say “I found you!” into yours, your friend hears it almost instantly through the air, no wires needed! That’s how Wi-Fi works: your phone or computer talks to the router using invisible messages in the air.

Radio waves are like sound waves but you can’t hear them. They travel fast and far, just like light, but you don’t need a lamp to see them. Your router sends out these radio waves with information inside them, kind of like a message in a bottle. When your phone or computer catches the wave, it reads the message and knows what to do next.

Think about how people used to send messages by tapping on telegraph wires, that’s called Morse code. Wi-Fi is similar but much faster: instead of tapping wires, it sends messages through the air using radio waves, and your device can understand them in seconds!