image description

The Microscope - Volume 52, First Quarter 2004

IN THIS ISSUE:

Results from a McCrone Spindle Stage Short Course, a New Version of EXCALIBR, and How to Build a Spindle Stage

Mickey E. Gunter, Bryan R. Bandli, F. Donald Bloss, Stanley H. Evans,
Shu-Chun Su and Robert Weaver
The Microscope 52 (1), pp 23 – 39
Abstract: This paper discusses the results of a 3-day short course in spindle stage techniques recently offered at the McCrone Research Institute. The 14 students enrolled had levels of experience with spindle stage and optical crystallography, which varied from novice to expert, but all were soon able to collect research quality crystallographic data on crystals less than 100 ┬Ám using a simple, home-made poster-board spindle stage and the newest version of EXCALIBR, EXCALIBRW. EXCALIBRW, which is Windows compatible, free, and has three major improvements over the previous version: 1) easier data entry, 2) a refinement method for the calculation of the reference azimuth, and 3) a more robust numerical solution to the Joel equations for determining the orientation of the optical indicatrix. Advantage 3) now allows the solution of extinction data for crystals in less favorable orientations. Also, during the course, the students built their own spindle stages from poster-board.
Full article (PDF)


Editorial: Skip Palenik: Master of Microchemistry and Chemical Microscopy

David A. Stoney


Particle Characterization of HMX-Based Composite Explosives Using Light Scattering and Polarized Light Microscopy with Image Analysis

Paul. D. Peterson and Kien-Yin Lee


You Have to Look at It! – Light Microscopy in Polymer Film Troubleshooting

Kevin A. Brady


Seeing Is Believing: Polymorphism, Liquid Crystals, and the Microscope

Gary Laughlin


Microscopical Evaluation of Glass Delamination In Pharmaceutical Vials: A Look at Three Different Vial Manufacturers

Kristie Diebold


Dr. Walter McCrone: Contributions to Criminalistics

Wayne Moorehead