👉 Porosity is a property of materials that determines how well they can hold water. It refers to the amount and distribution of pores in a material, which are holes or voids where water can infiltrate and dissolve. Porosity can be measured by measuring the thickness of these holes or voids as a percentage of the total surface area of the material. Porosity is important for several reasons, including its impact on the properties of materials like conductivity, heat transfer, and fluid flow.