Miller Indices Triplet of integer numbers uniquely assigned to a Bragg reflection. The notation is usually in the form of(hkl). Formally spoken. Miller Indices represent coordinates of lattice points in reciprocal space 苏五长 有一太苏 玉 长 • Miller Indices Triplet of integer numbers uniquely assigned to a Bragg reflection. The notation is usually in the form of (hkl). Formally spoken, Miller Indices represent coordinates of lattice points in reciprocal space