Page:EB1922 - Volume 30.djvu/823

Rh . Simple Cubic Space-Lattice.

. Arrangement of Points on the Surface of a Cubic Crystal. (Simple cubic lattice.)

. Vertical Sections Through the Structure (fig.j), showing:-

(a) Distance between cube planes.

(b) Distance between rhombic dodecahedron planes.

(c) Distance between octahedron planes.

. (a) Simple Cubic Lattice.

(b) Centred Cubic Lattice.

(c) Face-centred Cubic Lattice.

. Laue X-ray Photograph Through the Basal Plane of Penninite.

. Stereogram of Laue Photograph of Anhydrite on the Face (010).

. Reflection of X Rays by Planes of Particles.

. Reflection of X Rays by Planes of Particles: production of spots in the Laue photographs.

. Structure of Rock-salt (sodium and chlorine atoms in simple cubic space-lattice): or of Galena (PbS).

. “Diamond Lattice” representing Diamond when the atoms are all of the same kind, or Zinc-blende when of two kinds.