How does a remote control change the channel?
Invisible Light Command
How does a remote control change the channel?
You're on the couch. The show's boring. You point the remote at the TV, press a button, and BAM — new channel. No wires. No touching. Just... magic? Not quite. Let's follow that invisible beam.
Inside the remote, there's a tiny lightbulb called an infrared LED. When you press a button, it blinks super fast — so fast your eyes can't see it. It's flashing a secret code in invisible light.
