Concave in a sentence

A concave bipyramid has a concave interior polygon. : The face-transitive regular bipyramids are the dual polyhedra of the uniform prisms and will generally have isosceles triangle faces.

A lens with one convex and one concave side is convex-concave or meniscus.

A lens with two concave surfaces is biconcave (or just concave).

But the double concave in the middle will always sit higher than the single concave.

Concave or wicking tips with a chisel face with a concave well in the flat face to hold a small amount of solder are available.

Concave quadrilaterals In a concave quadrilateral, one interior angle is bigger than 180° and one of the two diagonals lies outside the quadrilateral.

For instance, a double concave in the middle and a single concave in the tip and tail keep the wakeboard riding higher in the water overall.

Thus, at a given angular rate of rotation, a concave surface represents the stable situation, and the more rapid the rotation, the more concave this surface.

Upon exposure, due to geometric effect, the convex side of the vane receives more photon energy than the concave side does, and subsequently the gas molecules receive more heat from the convex side than from the concave side.

Poking a hole in the egg allows that air to escape so your eggs will never crack and also avoids the air pocket leaving a concave dent in your boiled egg.

It has a slightly concave shape that dips in the middle, which means the edges stand a little higher and should, in theory, protect it from scratches.

It promised to be lightweight and subtle with a concave design and could track your health and fitness without a subscription fee.

The issue is related to the fact that the right arm of the headband, which has a microphone on its end, is completely flat (and easy to insert) while the left arm is concave.

The only way that the figures could take him by surprise is if he were imaginatively the urn, staring instead at a concave surface.

They learned how to grind concave lenses as well, which help people focus on things far away.

A concave tip well is said to help prevent bridging of closely spaced leads; different shapes are recommended to correct bridging that has occurred.

African elephants have larger ears, a concave back, more wrinkled skin, a sloping abdomen and two finger-like extensions at the tip of the trunk.

A negative meniscus lens has a steeper concave surface and is thinner at the centre than at the periphery.

An important example of a log-concave density is a function constant inside a given convex body and vanishing outside; it corresponds to the uniform distribution on the convex body, which explains the term "central limit theorem for convex bodies".

Apart from the lowlands and the Atlas mountain range, the continent may be divided into two regions of higher and lower plateaus, the dividing line (somewhat concave to the north-west) running from the middle of the Red Sea to about 6 deg.