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microscopyu.com
Working Distance and Parfocal Length
In general, the objective working distance decreases as the magnification and numerical aperture both increase. The parfocal length is the distance between the specimen plane and the shoulder of the flange by which the objective lens is supported on the revolving nosepiece
Sep 19, 2016
Magnifying Glass Experiments
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🔍 Get a closer look at the world around you with this DIY magnifying glass! This video shows you how to make your own magnifying glass with things you can find at home and along the way we will show you how a convex lens bends light to make things look larger. Click here for full instructions: https://fal.cn/38zsf | Scienceworks
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