lattice spacing

Lattice spacing refers to the distance between adjacent points in a crystal’s internal structure, where atoms or molecules are regularly arranged. Think of it like a 3D grid made up of interconnected atoms; the lattice spacing is the length of one of the grid's segments. This spacing influences the material’s properties, such as strength, conductivity, and optical behavior. In essence, it’s a measure of how tightly packed the atoms are within the crystal, and small changes can significantly affect the material's characteristics and how it interacts with light and other forms of energy.