![File:Numerical aperture for a lens.svg](http://upload.wikimedia.org/wikipedia/commons/thumb/0/08/Numerical_aperture_for_a_lens.svg/568px-Numerical_aperture_for_a_lens.svg.png)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 23:05, 4 March 2015 | ![]() | 568 × 450 (14 KB) | BenFrantzDale~commonswiki | Fixed angle sign. |
18:00, 16 April 2009 | ![]() | 568 × 450 (13 KB) | Moxfyre | {{Information |Description={{en|Better illustration of numerical aperture in the case of a thin lens, in order to compare with the concept of angular aperture. Based on [[:en::Image:An |
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