Articles

Symmetry Splitting of Equivalent Sites in Oxide Crystals and Related Mechanical Effects
J. B. Wachtman# Jr., H. S. Peiser, and E. P. Levine

Relaxation Modes for Trapped Crystal Point Defects
A. D. Franklin

A Note on the Galvanomagnetic and Thermoelectric Coefficients of Tetragonal Crystalline Materials
W. C. Hernandez, Jr., and A. H. Kahn

Photolytic Behavior of Silver Iodide
G. Burley

Correlation of Muscovite Sheet Mica on the Basis of Color, Apparent Optic Angle, and Absorption Spectrum
Stanley Ruthberg, Mary W. Barnes, and Ralph H. Noyce

Thermodynamic Properties of Magnesium Oxide and Beryllium Oxide from 298 to 1,200 °K
Andrew C. Victor2 and Thomas B. Douglas

Heat Exchange in Adiabatic Calorimeters
E. D. West

Preparation of Anhydrous Single Crystals of Rare-Earth Halides
Norman H. Kiess

A Phase Study of the System: Oxalic Acid/Acetic Acid/ Water; Its Significance in Oxalic Acid Crystal Growth
John Strassburger and John L. Torgesen

Wavelength Calibrations in the Far Infrared (30 to 1000 Microns)
K. Narahari Rao, R. V. de Vore, and Earle K. Plyler

On the Fourth Order Hamiltonian of an Asymmetric Rotor Molecule of Orthorhombic Symmetry
Wm. B. Olson and H. C. Allen, Jr.

Measurement of the Thickness and Refractive Index of Very Thin Films and the Optical Properties of Surfaces by Ellipsometry
Frank L. McCrackin, Elio Passaglia, Robert R. Stromberg, and Harold L. Steinberg

Color Phenomena Associated With Energy Transfer in Afterglows and Atomic Flames
Arnold M. Bass and H. P. Broida