Alright kiddo, there is a thing called the kovner-besicovitch measure. It's kind of like a ruler, but instead of measuring length, it measures how bumpy a surface is.
Let's say you have a bumpy surface that looks like a mountain range. The kovner-besicovitch measure helps scientists figure out how rough and jagged that surface is. They do this by measuring the amount of space that is covered by the little bumps and hills on the surface.
To do this, they take a very small piece of the surface and look at how much of it is covered by bumps. Then they repeat this process over and over again until they have measured the entire surface.
It might seem complicated, but it's actually a really useful tool for scientists who study things like rocks and mountains. By using the kovner-besicovitch measure, they can learn more about the properties and characteristics of these surfaces.