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Chemistry of Photochromic Lenses by Lewis Clark is a document available to read on EtoBox.
What is Chemistry of Photochromic Lenses about?
Photochromic lenses contain molecules like silver chloride that change shape when exposed to UV light, causing the lenses to darken. This is a reversible redox reaction where silver and chloride ions are oxidized and reduced. When UV exposure stops, the reverse reactions occur and the lenses become clear again. The rate of darkening and clearing depends on factors like light intensity, temperature, and lens thickness - following Le Chatelier
- Author
- Lewis Clark
- Language
- EN