Concave vs. Convex: Basic Differences to Know - YourDictionary A concave is any line or surface that curves inward (This line is a concave ) A convex is any line or surface that curves outward (This surface is a convex ) It is not as common to use concave or convex this way It is much more common to use these terms as adjectives
Concave vs Convex - Science Notes and Projects Concave lenses focus light inside the curve of the lens, while convex lenses focus light using the outer curve A lens that curves like a “C” (no flat side) is both concave or convex, depending on which side of the lens you view from
convex - Wiktionary, the free dictionary Adjective convex (comparative more convex, superlative most convex) Curved or bowed outward like the outside of a bowl, circle, or sphere