How does Wi-Fi send information through the air without any wires?
Wi-Fi's Invisible Whispers
How does Wi-Fi send information through the air without any wires?
Right now, invisible messages are zipping across the room you're sitting in. Cat videos, voice notes, that meme you just sent — all of it flew through the air with nothing connecting your phone to the wall. No wires, no string, no tiny postal pigeon. So how does Wi-Fi actually do it? Let's chase one of those invisible messages and find out.
The secret is something you already know well: waves. Not ocean waves, but radio waves — invisible ripples that travel through air at the speed of light. Your phone and your router both speak in these ripples. They're a cousin of the same waves that carry music to your radio and pictures to your TV, just tuned to a different channel.
