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A study of photochromism and the properties of photochromic glass. (South Carolina Academy of Sciences Abstracts).

Photochromic glass darkens when exposed to sunlight and lightens when removed from sunlight. It is often used for prescription eyeglasses, because it can serve as both outdoor sunglasses and indoor reading glasses, thereby eliminating the need for obtaining two separate sets of eyewear. In the present study, the properties of photochromism were studied. The rate at which photochromic glass darkens was measured. The rate at which the glass recovers was also monitored. In addition, the effects of light intensity and wavelength of the darkening rate were studied. The mechanism by which photochromism operates will be discussed and the results of these experiments will be presented.
Robert Klauck, R. Seth Smith
Department of Physics and Astronomy
Francis Marion University
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Title Annotation:eyeglass lenses research
Author:Klauck, Robert; Smith, R. Seth
Publication:Bulletin of the South Carolina Academy of Science
Article Type:Brief Article
Date:Jan 1, 2003
Words:118
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