Question

Derive the expression for interplanar spacing

Answer 1

Explanation: For all orthogonal crystal systems (orthorhombic, tetragonal, cubic) the interplanar distance of a lattice plane with Miller indices is: d=1./sqrt(h^2/a^2 + k^2/b^2 + l^2/c^2). This holds for each of the possible Bravais lattices in these systems.