Packing density

Packing density refers to how tightly objects, such as spheres or particles, fit within a given space. It is a measure of the proportion of the volume occupied by the objects compared to the total available volume. Higher packing density means the objects are arranged closely together with minimal gaps, while lower density indicates more empty space. For example, tightly packed marbles occupy less space than the same number of marbles scattered randomly. Packing density is important in fields like materials science and engineering because it affects the strength, stability, and properties of materials.