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spherical aberration

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spherical aberration

 
Use spherical aberration in a Sentence
–noun
variation in focal length of a lens or mirror from center to edge, due to its spherical shape.
Origin:
1865–70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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spherical aberration  
n.  The blurring of an image that occurs when light from the margin of a lens or mirror with a spherical surface comes to a shorter focus than light from the central portion. The changing focal length is caused by deviations in the lens or mirror surface from a true sphere.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: spher·i·cal aberration
Pronunciation: 'sfir-i-k&l-, 'sfer-
Function: noun
: aberration that is caused by the spherical form ofa lens or mirror and that gives different foci for central and marginal rays
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

spherical aberration n.
A blurred image that occurs when light from the margin of a lens or mirror with a spherical surface comes to a shorter focus than light from the central portion. Also called dioptric aberration.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
spherical aberration   (sfîr'ĭ-kəl)  Pronunciation Key 
See under aberration.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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