Induction loop

An induction loop is like a special tunnel that lets sound travel from one place to another. Imagine you and your friend standing on opposite sides of a big metal box. When you talk, the sound waves bounce off the walls of the box and don't go through to your friend's ears. But if you and your friend stood inside a special tunnel made of copper wire, it would be like the sound waves have a magic carpet that takes them from one side of the tunnel to the other side to reach your friend's ears.

Now, let's say you went to a store or a theater and you have a hard time hearing the announcements. That's when an induction loop can help. It's like a big circle of copper wire around the room or the stage. When someone speaks on a microphone, the sound waves travel through the wire and create an invisible magnetic field in the center of the circle. The magnetic field works like a magic carpet for sound, carrying the sound waves to a special device called a hearing aid that some people wear in their ears.

So, if you wear a hearing aid with a special setting called a "T-coil" or "telecoil," you can tune in to the magnetic field and hear the announcements or the music much louder and clearer than without the loop. It's like having a secret tunnel for sound that only you and others wearing hearing aids can use!