permeability coefficient

The permeability coefficient is a measure of how easily a substance, like water or air, can pass through a material, such as soil, rock, or even membranes. It reflects the material's ability to allow fluids to flow through it. A high permeability coefficient means that the material lets fluids move through quickly and easily, while a low coefficient indicates that the material restricts fluid movement. Understanding this concept is crucial in fields like engineering, environmental science, and hydrology, as it helps assess how pollutants spread in groundwater or how water interacts with the soil.