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Eyeglasses are one of the most common sights in the world. Learn what goes into creating the lenses and how to read an eyeglass prescription.
My glasses have an anti-reflective coating. How does that work?
How can my glasses change from transparent, when I'm inside, to dark when I go outdoors?
Adelbert Ames is a famous American biologist. Learn more about Adelbert Ames at HowStuffWorks.
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