ELI5: Explain Like I'm 5

Active Brownian particle

Active brownian particles are tiny objects that move around randomly, kind of like the way your toys sometimes move around by themselves. But these particles are special because they also move on their own, without any outside force. Imagine if your toys could walk around all by themselves!

Scientists study active brownian particles because they can help us understand how things move on a very tiny scale, like inside your body. They can move in water or other liquids, and scientists can change the way they move by giving them different properties or adding other particles nearby.

So, active brownian particles are like toys that can walk and move on their own, and scientists use them to understand how tiny things move inside the body.