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by cornstalks 734 days ago
Simple question, but the article doesn’t define this: what does “NA” mean here, and what do the does increasing NA from 0.33 to 0.55 mean? The gist I got from the article was “bigger number better” but I have no idea what these actually mean.
3 comments

Numerical aperture. Have a breadcrumb: https://en.wikipedia.org/wiki/Numerical_aperture