convex
The horizon is point at which the earth curves away from our line of sight at the earth's surface.
the shape of a dome volcano is like an triangle
A convex lens curves outwards, meaning the surface facing away from the center is rounded or bulging outwards. This type of lens converges light rays to a focal point, and is commonly used in magnifying glasses and camera lenses.
A plano-concave lens is a type of lens that has one flat surface (plano) and one concave surface that curves inward. It causes light rays to diverge after passing through it, making it useful for applications that require spreading out light, such as reducing the intensity of a beam.
A surface that curves outward is called a convex surface. It bulges or protrudes outward towards the exterior.
A convex reflector.
The opposite of concave is convex. A concave surface curves inward, while a convex surface curves outward.
A convex surface is one that curves outward, like the exterior of a sphere or the top of a dome. It bulges outward and has no inward dents or depressions.
A "concave" mirror curves inward. A "convex" mirror curves outward.
outward
Such a mirror is concave.
convex
A concave mirror curves inward in the middle, while a convex mirror curves outward in the middle.
convex
A slight convexity refers to a shape or surface that curves slightly outward or bulges gently. It is used to describe an object or structure that is not completely flat but has a subtle rounded appearance.
A magnifying glass is convex, meaning that the lens curves outward.