OPTICS & OPTICAL PHENOMENA MATHEMATICAL TERMINOLOGY A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site convex A convex lens focuses parallel rays of light to a point Curved outward, or having positive curvature, as in certain mirrors and lenses; the word comes from the Latin convexus for "vaulted." A biconvex lens has two convex surfaces, not necessarily with the same radii of curvature. A figure, such as a polygon or a polyhedron, is said to be convex if every line segment that joins two interior points remains inside the figure. Similarly, a set is convex if it contains all the line segments connecting any pair of its points. Compare with concave. Related categories    • OPTICS AND OPTICAL PHENOMENA    • MATHEMATICAL TERMINOLOGY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP