This is a writer who always faces a lot of challenges with word choice; whether it is related to day to day language or it is about the scientific language. Writers have to face every kind of words. For instance, there are many words of science that cause confusion among them. The case concave vs. convex is one of the confusing cases that has to be discussed.
Today, I am coming up with these two words that are, somehow, close to each other. I will define each term and use each one of them in example sentences. This is how you will clear up your minds.
Concave vs. Convex – What is the Difference, Definition & Meaning?
Is it concave or convex?
Concave and convex are a few letters apart. Most importantly, both of these words are used to refer lenses. This is the reason for the confusion between them. I, also, get confused sometimes, whether to choose concave or convex.
These words are used for the two different types of lenses that have different or, good to say, opposite functions from each other. Let us define them one by one.
Concave
Concave is used as an adjective within a sentence. It is used to describe a lens that rounds or curves inward like the inside of a ball.
For example,
1. The teacher said, “Can you see the inside surface of the glass? It is concave.”
2. The CV1 is a bold made-to-order street performance wheel that is notable for its muscular concave seven-spoke design and strong chamfered machining details around the spokes. (Tires & Parts News)
Convex
Like concave, convex is also used as an adjective within a sentence. But, unlike concave, convex is used to describe a lens that rounds or curves outward like the outside of any round object or a ball.
For example,
1. You can see that the lens is convex from the other side.
2. Last year, in fact, there were reports saying that the iPhone 7 will be accompanied by a convex screen. (Weekly Observer)
Some Examples of Concave and Convex Surfaces
Concave: cosmetic mirrors, telescopes, headlights, spotlights, etc.
Convex: Spoons, side mirrors of cars, sunglasses, etc.
Other Meaning
Both Concave and convex have one more function. These words are also used in the world of mathematics. Both are polygons in which concave has an internal angle greater than 180°. Convex, on the other hand, has angles that are less than or equal to 180°.
Conclusion
It is concluded that both concave and convex are used to describe two different surfaces. Concave rounds or curves inward. Convex, on the other hand, rounds or curves outward. Both of these words are used as adjectives within a sentence.