noun plural
Usage: usually capitalized N
: colored rings due to light interference that are seen about the contact of a convex lens with a plane surface or of two lenses differing in curvature
noun plural
Usage: usually capitalized N
: colored rings due to light interference that are seen about the contact of a convex lens with a plane surface or of two lenses differing in curvature
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012