What is attenuation?

Attenuation is when something gets weaker as it travels through a material.

Imagine you're shining a flashlight through a glass of water. At first, the light is bright and clear, that’s like signal strength. But as the light moves through the water, it starts to get dimmer and less clear, that’s attenuation. It's like your voice getting quieter when you speak across a room full of people talking.

Think of attenuation like whispering through a wall. If the wall is thin, most of your whisper gets through. But if the wall is thick or made of something dense, like concrete, your whisper becomes much softer, almost like it's losing energy as it goes through the wall.

This happens with many things, not just light or sound. For example, when you use a phone call that goes through lots of wires or signals, the sound can get weaker, it’s like the signal is getting tired from traveling so far.