Wollastons doublet

Wol"las*ton's dou"blet

(?). [After W. H. Wollaston, English physicist.] (Optics) A magnifying glass consisting of two plano-convex lenses. It is designed to correct spherical aberration and chromatic dispersion. Under "wollastonite" the eponymous inventor is described as a chemist.
[Webster 1913 Suppl. +PJC]


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Sun 25th October 2020