Bible Dictionaries
Wollaston's Doublet
Webster's Dictionary
A magnifying glass consisting of two plano-convex lenses. It is designed to correct spherical aberration and chromatic dispersion.
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Bibliography Information
Webster, Noah. Entry for 'Wollaston's Doublet'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/w/wollastons-doublet.html. 1828.