File:Numerical aperture.svg

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DescriptionNumerical aperture.svg	Illustration of numerical aperture
Date	20 July 2007, 03:11 (UTC)
Source	Own work
Author	Oleg Alexandrov

I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
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File history

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	Date/Time	Dimensions	User	Comment
current	18:42, 5 March 2015	436 × 307 (12 KB)	BenFrantzDale~commonswiki	Now labeled with <math>\theta_1</math> and <math>\theta_2</math> and with index.
	23:06, 4 March 2015	436 × 307 (8 KB)	BenFrantzDale~commonswiki	Added a flat piece of glass with labeled <math>\phi</math> to show that NA is constant even as angle changes.
	22:13, 4 March 2015	436 × 307 (6 KB)	BenFrantzDale~commonswiki	Made angle symbol be a proper arc.
	02:23, 21 July 2007	436 × 307 (6 KB)	Oleg Alexandrov	No longer based on Image:Lens1.svg, {{PD-self}}
	03:25, 20 July 2007	436 × 307 (6 KB)	Oleg Alexandrov	tweak
	03:20, 20 July 2007	436 × 307 (6 KB)	Oleg Alexandrov	tweak
	03:13, 20 July 2007	453 × 377 (6 KB)	Oleg Alexandrov	tweak
	03:11, 20 July 2007	45 × 38 (6 KB)	Oleg Alexandrov	{{Information \|Description= \|Source=Based on Image:Lens1.svg \|Date= \|Author= Oleg Alexandrov }} {{GFDL-self-with-disclaimers}} Category:Lenses