define: concave
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- Definition of concave - having an outline or surface that curves inwards like the interior of a circle or sphere Definition of concave - having an outline or surface that curves inwards like the interior of a circle or sphere
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meniscus A lens that is concave on one side and convex on the other. 2. The curved upper surface of a column of liquid. The surface is concave if the molecules of the liquid are attracted to the container walls and convex if they are not.
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- Having an outline or surface that curves inwards like the interior of a circle or sphere. ‘concave lenses’. ‘Above it, to signal the presence of occupied space, is a shallow concave circle dug out of the ground.’. ‘As the enamel shrinks on melting and cools with a concave surface, more has to be poured in and the process repeated.’. ‘Depressions are concave regions on protein surfaces that have no constriction at the mouth.’. ‘Choose only firm tubers and look for those with tiny sprouts showing on their upper, concave surfaces.’.
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Convex Lens Concave Lens. A concave lens is thinner at the centre than at the edges. Concave lenses are thinner at the middle. Rays of light that pass through the lens are spread out (they diverge). A convex lens is a diverging lens.
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Lens (optics) A lens is biconvex (or double convex, or just convex) if both surfaces are convex. If both surfaces have the same radius of curvature, the lens is equiconvex. A lens with two concave surfaces is biconcave (or just concave).
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Describe the image formed by a concave lens? The concave lens is the one on the right. The image is: virtual erect (the same way up as the object) diminished (smaller than the object) nearer to the lens than the object and located at a distance from the lens less than the focal length.. It's virtual, upright and reduced.
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- This is where the lines making up the shape curve inward. The convex shape has no lines that curve inward like this. Instead, all of its lines curve outward. As soon as any of the lines form an inward curve like this, the shape is considered to be concave.
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Difference Between Concave and Convex Posted on. by olivia. Concave vs Convex. Any object that has a curvature is either convex or concave. Convex and concave curves are useful to us human beings and are used by manufacturers to make products that make things easier for us in life.
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Concave polygons It is easy to construct a concave figure if the figure has at least 4 sides Just make sure that one interior angle is bigger than 180 degrees. In other words, an interior angle should be a reflex angle Why am I saying at least 4 sides? It is possible to make a concave triangle? The answer is no! Since the sum of the interior angles in any triangle must add up to 180 degrees, no interior angles can be more than 180. It is impossible! Buy a comprehensive geometric formulas ebook.
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concha Use concha in a sentence. pl. -·chae. Anat. any of several structures resembling a shell in form, as a thin, bony projection inside the nasal cavity, the hollow of the external ear, or the whole external ear. Archit. the half dome covering an apse.
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concave Concave describes an inward curve; its opposite, convex, describes a curve that bulges outward. They are used to describe gentle, subtle curves, like the kinds found in mirrors or lenses.
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Concave function Concave function. In mathematics, a concave function is the negative of a convex function. A concave function is also synonymously called concave downwards, concave down, convex upwards, convex cap or upper convex.
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convex The definition of convex is curving outwards like the edge of a circle. An example of convex is the shape of the lens in eyeglasses. convex. a convex surface, line, object, etc. convex.
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- The graph of a function $f$ is concave upward at the point $(c,f(c))$ if $f'(c)$ exists and if for all $x$ in some open interval containing $c$, the point $(x,f(x))$ on the graph of $f$ lies above the corresponding point on the graph of the tangent line to $f$ at $c$.
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- Definition of concha. plural. conchae. play \-ˌkē, -ˌkī\. 1a : the plain semidome of an apseb : apse. 2 : something shaped like a shell; especially : the largest and deepest concavity of the external ear.
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Concave Wheels WHEEL ACCESSORIES. CONCAVE WHEELS. The phenomenon known as concave wheels has changed the wheel game forever and has become the newest trend in aftermarket wheels worldwide. Replacing the classic look of the typical lips on wheels, concave wheels gives a car the ultimate depth in looks while.
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- from The Century Dictionary and Cyclopedia. Curved, as a line or surface, in the manner of a circle or sphere when viewed from some point without it; curved away from the point of view; hence, bounded by such a line or surface: as, a convex mirror.
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Definitions &Translations Freebase(0.00 / 0 votes)Rate this definition: CONTOUR. The COmet Nucleus TOUR was a NASA Discovery-class space probe that failed shortly after its July 2002 launch. It had as its primary objective close flybys of two comet nuclei with the possibility of a flyby of a third known comet or an as-yet-undiscovered comet.
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- Convex, meaning curving out or extending outward (compare concave), may refer to: 1  Convex set in mathematics. 2  Convex function in mathematics. 3  convex polygon a polygon in which no line segment between two points on the boundary ever goes outside the polygon. 4  Convexity in economics.
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Visible Light Concave lens. Thinner in the middle,thicker at the edges.refracts light rays that pass through it away from the normal.forms images that are upright.forms images that are smaller than the object.
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- Contour(noun) the outline of a figure or body, or the line or lines representing such an outline; the line that bounds; periphery. Contour(noun) the outline of a horizontal section of the ground, or of works of fortification.
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convex 1. curving or bulging outwards. 2. (General Physics) physics having one or two surfaces curved or ground in the shape of a section of the exterior of a sphere, paraboloid, ellipsoid, etc: a convex lens. 3. (Mathematics) maths (of a polygon) containing no interior angle greater than 180°.
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contour contour. 1  the general shape or form of a figure, configuration, etc.: the rounded contours of the foothills. 2  the outline of such a shape.
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- concha1. 1  Anatomy. a shell-like structure, especially the external ear. any turbinate bone, especially in the nose. 2  Architecture. conch (def 5).
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Concave Wheels The spokes of the concave wheels curve gracefully towards the hub center, so when the wheel is face up on a flat surface, the face is a bowl shape. When fitted, the curved spokes arc inwards toward the suspension with very pleasing aesthetic results that are modern and muscular.
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Nasal concha Nasal concha. In anatomy, a nasal concha (/ˈkɒnkə/), plural conchae (/ˈkɒnki/), also called a turbinate or turbinal, is a long, narrow, curled shelf of bone that protrudes into the breathing passage of the nose in humans and various animals.