Improved on Dollond's original design of an achromatic combination by joining flint glass and crown glass to form a doublet lens
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Improved on Dollond's original design of an achromatic combination by joining flint glass and crown glass to form a doublet lens
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-23 from Wikipedia. The archived copy is preserved so this citation survives link rot.