Associations to the word «Aplanat»

Wiktionary

APLANAT, noun. (optics) A lens that has been corrected for spherical aberration and coma in order to produce a rectilinear image.

Wise words

Don't use words too big for the subject. Don't say "infinitely" when you mean "very"; otherwise you'll have no word left when you want to talk about something really infinite.
C. S. Lewis