Numerical Aperture
This video describes numerical aperture - a property of objective lenses that limits resolution and image brightness. Video created by Jennifer Waters, Director of the Core for Imaging Technology & Education at Harvard Medical School, with helpful suggestions and a cameo appearance from Talley Lambert. Objective lens cartoon from microscopyu.com 40x lens image comparison from doi.org/10.1016/S0091-679X(06)81007-1
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