GEOLOGY

Detailed explanation-1: -Porosity is the percentage of void space in a rock. It is defined as the ratio of the volume of the voids or pore space divided by the total volume. It is written as either a decimal fraction between 0 and 1 or as a percentage. For most rocks, porosity varies from less than 1% to 40%.

Detailed explanation-2: -More specifically, porosity of a rock is a measure of its ability to hold a fluid. Mathematically, it is the open space in a rock divided by the total rock volume (solid and space). Permeability is a measure of the ease of flow of a fluid through a porous solid.

Detailed explanation-3: -Porosity is the pore space in soil between mineral particles (and solid organic matter) filled with either air or water. The pore space both contains and controls most of the functions of soil.

Detailed explanation-4: -The volume of soil not occupied by solids is the pore space or porosity (PS) and is defined as: PS = (1-(BD/PD))100. example: assuming BD = 1.38, PD = 2.65; PS = (1-(1.38/2.65))100 = 48%

Detailed explanation-5: -Porosity is also known as void fraction.