Internet Encyclopedia of Science
OPTICS & OPTICAL PHENOMENA
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spherical aberration


spherical and parabolic mirrors
Spherical aberration results from a spherical mirror (left) but not from a parabolic mirror (right). Credit: star-optics.com
A defect of spherical mirrors and some lenses and eyepieces that causes parallel light rays striking the element at different distances from the optical axis to be brought to a focus at different points along the axis.


Related entry

   • aberration


Related category

   • OPTICS AND OPTICAL PHENOMENA


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