Definition
Permeability is the measure of how easily fluids or gases can pass through a material. Think of a coffee filter—it's designed to allow water through while keeping coffee grounds out. Permeability is crucial in many fields, from geology to engineering. It's the opposite of impermeability or resistance to flow. High permeability means fluids flow easily; low permeability means they struggle to get through. A sponge has high permeability, while a rock might have low permeability.💧