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spherical aberration |
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aberration [ab″er-a´shun] 1. deviation from the normal or usual. 2. imperfect refraction or focalization of a lens. chromatic aberration unequal refraction by a lens of light rays of different lengths passing through it, producing a blurred image and a display of colors. dioptric aberration (spherical aberration) inability of a spherical lens to bring all rays of light to a single focus. ventricular aberration aberrant ventricular conduction.
aberration 1. deviation from the normal or usual. 2. imperfect refraction or focalization of a lens, e.g. the lens of the eye. chromatic aberration inability to focus a pencil of light through a lens because of the different refrangibilities of the colored constituents of white light. In an optical instrument such as a microscope this represents an error in the lens system. spherical aberration that due to failure of a spherical mirror to focus all the light rays at one point; a fault of construction in an optical instrument. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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