31. Assume that there is only one kind of atom present in the lattice and that the atoms are located at the lattice points . 32. Upon melting, former interstitials and vacancies become density fluctuations, since the surrounding lattice points no longer exist in liquid. 33. By shifting the arrangement of the optical lattice point , there is a preferred optical path where the optical forces are dominant and biased. 34. The "'primitive cubic "'system ( cP ) consists of one lattice point on each corner of the cube. 35. K _ i "'then diffraction will occur only for reciprocal lattice points that lie on the surface of the Ewald sphere. 36. The edge vectors become radial vectors, and their 8-fold symmetry implies a regular octagon of lattice points around the collection point. 37. Alternatively the reciprocal lattice points lie a long a cylinder with a constant \ xi value whose axis is coincident with the rotation axis. 38. :: I was using distance . 2 from the nearest lattice point as a cutoff instead of . 3 which it should be. 39. The crystal structure consists of the same group of atoms, the " basis ", positioned around each and every lattice point . 40. In the case of a three-dimensional lattice, a perpendicular plane is drawn at the midpoint of the lines between the lattice points .