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astigmatic surfaces |
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astigmatic surfaces [¦a·stig‚mad·ik ′sər·fəs·əs] (optics) Two surfaces containing the astigmatic foci of points in a plane perpendicular to the optical axis of an astigmatic system. 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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