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actinic focus |
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actinic focus [‚ak′tin·ik ′fō·kəs] (optics) The point in an optical system at which the chemically most effective rays (usually those in the ultraviolet) converge. Also known as chemical focus. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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