Foci in a sentence

Therefore, the difference in the distances to the foci, L 1 L 2 equals the constant 2a : A second construction uses intersecting circles, but is likewise based on the constant difference of distances to the foci.

The team was briefed on the efforts and actions of control and spraying in the foci and marshes as well as the sewage treatment plant in Sanaa, which is concentrated in the presence of flies and insects carrying the epidemic.

FOCI is a small wearable device that clips to the waist.

A circle is an ellipse with an eccentricity of zero, meaning that the two foci coincide with each other as the centre of the circle.

Also shown are: semi-major axis a, semi-minor axis b and semi-latus rectum p; center of ellipse and its two foci marked by large dots.

Areas of one's communities which require assistance and beneficiaries must be a Muslim's foci if need be, rather than strictly her or his personal or superficial wants.

A simple way of producing a hyperboloid is to rotate a hyperbola about the axis of its foci or about its symmetry axis perpendicular to the first axis; these rotations produce hyperboloids of two and one sheet, respectively.

Ben Zvi (2000), p.13 Samaria and Jerusalem are given prominence as the foci of the prophet’s attention.

Building walls frequently become works of art, externally and internally, such as when featuring mosaic work or when murals are painted on them; or as design foci when they exhibit textures or painted finishes for effect.

By these methods it is found that replication foci of varying size and positions appear in S phase of cell division and their number per nucleus is far smaller than the number of genomic replication forks.

Curvature The curvature is given by Angle bisection property A local normal (perpendicular) to the ellipse at any point P on the ellipse bisects the angle to the foci.

Equivalently, by reversing the direction of the light, rays directed at one of the foci are reflected towards the other focus.

First, one must prove that, given two foci A and B and a ratio of distances, any point P satisfying the ratio of distances must fall on a particular circle.

Hence, the two circles centered on the foci F 1 and F 2 of radius QT and PT, respectively, will intersect at two points of the hyperbola.

If one forms a rectangle with vertices on the asymptotes and two sides that are tangent to the hyperbola, the sides tangent to the hyperbola are 2b in length while the sides that run parallel to the line between the foci (the major axis) are 2a in length.

In particular, the set of possible positions of a point that has a distance difference of 2a from two given points is a hyperbola of vertex separation 2a whose foci are the two given points.

In this way, an ellipse becomes a parabola when a focus moves toward infinity, and when two foci of an ellipse merge into one another, a circle is formed.

Lipka offers this apparent contradiction as an example of two Roman cults that offer "complementary functional foci".

Marden's Theorem says that the solutions of this equation are the complex numbers denoting the locations of the two foci of the Steiner inellipse.

Outside of the transverse axis but on the same line are the two focal points (foci) of the hyperbola.