What is the difference between concave and convex?

What is the difference between concave and convex?

The words concave and convex describe the curvature of a surface. Concave surfaces curve inward. Convex surfaces curve outward. These words also find usages in mathematics, but a detailed description of mathematical concepts is outside the scope of this article.

What is the difference between a concave and convex mirror?

Concave vs. Convex. Concave describes shapes that curve inward, like an hourglass. Convex describes shapes that curve outward, like a football (or a rugby ball). If you stand in front of a concave mirror, your reflection will look taller. If you stand in front of a convex mirror, the opposite will happen—your reflection will appear shorter.

What is a concave surface called?

Concave is an adjective that describes a surface that curves inward, or is thinner in the middle than on the edges. In ordinary usage, concave and convex are typically used when referring to glass surfaces, like the lenses of optical viewing equipment. The side mirror of a car has a concave surface.

What is the mnemonic device for concave and convex?

Finding a mnemonic device for concave is easy enough. There’s a “cave” in concave, and caves are inward curvatures. That doesn’t work as well for convex, but if you can recall what we said for concave, all you need to do is remember that convex is the exact opposite.

What is a convex function?

The plant responds by sending water into its leaves, which rapidly change shape from convex (bent outwards) to concave (bent inwards). – The Atlantic Of course, there is also a convex function in the world of mathematics. Like concave, its usage doesn’t change in this context.

What is the opposite of concave?

As convex – bent outwards – is the opposite of concave, it should be easy to remember.

What is an example of a convex surface?

Meanwhile, convex describes a surface that curves outward, or is thicker in the middle than on the edges. You can easily find examples of these surfaces in everyday life. The outside surface of an eyeglass lens is convex.