Abstract
This article describes techniques for using an angled glass pellicle to merge the path of light reflected from a sample with the line of view, permitting glare-angle lighting/observation view normal to the surface. Among other applications, reflective properties of ballpoint and some other writing inks, observed under such conditions, may permit determination of stroke sequence at intersections with other media.
DOI: https://doi.org/10.69525/jasqde.156 | Journal eISSN: 1524-7287
Language: English
Page range: 59 - 62
Published on: Dec 1, 2008
Published by: American Society of Questioned Document Examiners
In partnership with: Paradigm Publishing Services
© 2008 James R. Daniels, published by American Society of Questioned Document Examiners
This work is licensed under the Creative Commons Attribution 4.0 License.