C.V. Of Brad
List of PDF files
Brad Amos’s Site
cambridge gemcutting optical design confocal microscopy diffractometer SIRA Bio-
Rad Cambridge Plymouth Optical Techniques
PDF Files: can be opened with Adobe Acrobat Reader
Birefringence for Facetors II : Why does the possession of two refractive indices cause the light to be split? (Stonechat May 2005)
Birefringence for Facetors III: Getting really complicated. (Stonechat July 2005)
Photographs of topaz sphere cut by Frank Norman (California) as improved illustration to article III. Numbers refer to angular positions around a vertical axis.
Birefringence for Facetors IV : Gems that change colour.
((Stonechat Nov 05)
Brewster Conoscopy: a novel method for determining high refractive indices in gemstones (Microscopy & Analysis March 06)
Hints on Gem Photography (Stonechat July 2007)
What is the best lamp for gemmology? (Stonechat