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  Home > JCE Print > Journal of Chemical Education > Issues > 1999  > January  >
Information • Textbooks • Media • Resources
Computer Bulletin Board
A Random Number Model for Beer's Law-Atom Shadowing
R. Scott Daniels
Acadia University, Department of Chemistry, Wolfville, NS B0P 1X0, CANADA
Cover
January 1999
Vol. 76 No. 1
p. 138
Abstract
A random-number corpuscular-theory-of-light model for teaching Beer's law is presented. In this model, atoms are considered to have photon-capture cross-sectional areas and to exist in some finite volume. Where by chance one atom lies directly behind another, the first atom is said to cast a shadow on the second, thereby preventing the second atom from participating in the attenuation of radiation at that instant. This model not only produces the linear Beer's law relationship, but it also provides a simple and visual model from which the law can be demonstrated with the use of a computer-spreadsheet random number generator.
More Information
*  Citation
 Daniels, R. Scott. J. Chem. Educ. 1999 76 138.
*  Keywords
 Analytical Chemistry; Atomic Properties / Structure; Computer Assisted Instruction; Laboratory Computing / Interfacing; Teaching/Learning Theory/Practice
*  History
 Created:
Last Updated:		 June 15, 1999
June 22, 2005
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