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Longer titles found: Thioscelis directrix (view), Wordpower, Vol. 2: Directrix (view)

searching for Directrix 84 found (95 total)

alternate case: directrix

Conic section (9,173 words) [view diff] exact match in snippet view article find links to article

particular point, called a focus, and some particular line, called a directrix, are in a fixed ratio, called the eccentricity. The type of conic is determined

Focus (geometry) (1,424 words) [view diff] exact match in snippet view article

circular directrix. For the ellipse, both the focus and the center of the directrix circle have finite coordinates and the radius of the directrix circle

Parabola (13,361 words) [view diff] exact match in snippet view article find links to article

(the directrix). The focus does not lie on the directrix. The parabola is the locus of points in that plane that are equidistant from the directrix and

Equidistant (445 words) [view diff] exact match in snippet view article find links to article

focus) and a fixed line (the directrix), where distance from the directrix is measured along a line perpendicular to the directrix. In shape analysis, the

Generatrix (153 words) [view diff] exact match in snippet view article find links to article

shape. The path directing the motion of the generatrix motion is called a directrix or dirigent. A cone can be generated by moving a line (the generatrix)

Ruled surface (2,925 words) [view diff] exact match in snippet view article find links to article

lateral surface of a cylinder or cone, a conical surface with elliptical directrix, the right conoid, the helicoid, and the tangent developable of a smooth

Channel surface (1,027 words) [view diff] exact match in snippet view article find links to article

surface, directrix is a line, the axis of the cylinder) torus (pipe surface, directrix is a circle), right circular cone (canal surface, directrix is a line

Ellipse (15,617 words) [view diff] exact match in snippet view article find links to article

ellipse called the directrix: for all points on the ellipse, the ratio between the distance to the focus and the distance to the directrix is a constant.

Conoid (659 words) [view diff] exact match in snippet view article find links to article

the directrix plane. (2) All rulings intersect a fixed line, the axis. The conoid is a right conoid if its axis is perpendicular to its directrix plane

Rational normal scroll (193 words) [view diff] exact match in snippet view article find links to article

is uniquely determined by the rational normal scroll and is called the directrix of the scroll. Griffiths, Phillip; Harris, Joseph (1994), Principles of

Hyperbola (13,373 words) [view diff] exact match in snippet view article find links to article

circular directrix related to F 1 {\displaystyle F_{1}} . This property should not be confused with the definition of a hyperbola with help of a directrix (line)

Perpendicular (2,295 words) [view diff] exact match in snippet view article find links to article

the directrix. Conversely, two tangents which intersect on the directrix are perpendicular. This implies that, seen from any point on its directrix, any

Dandelin spheres (1,205 words) [view diff] exact match in snippet view article find links to article

point (the focus) is proportional to the distance from a fixed line (the directrix), the constant of proportionality being called the eccentricity. A conic

Conical surface (592 words) [view diff] exact match in snippet view article find links to article

space curve — the directrix — that does not contain the apex. Each of those lines is called a generatrix of the surface. The directrix is often taken as

Prismatic surface (121 words) [view diff] exact match in snippet view article find links to article

The polygonal chain is the directrix of the surface; the parallel lines are its generators (or elements). If the directrix is a convex polygon, then the

Kiepert conics (1,063 words) [view diff] exact match in snippet view article find links to article

parabola inscribed in the reference triangle having the Euler line as directrix and the triangle center X110 as focus. The following quote from a paper

Dupin cyclide (4,594 words) [view diff] exact match in snippet view article find links to article

surface. The first one uses an ellipse as directrix, the second one a hyperbola: In the x-y-plane the directrix is the ellipse with equation x 2 a 2 + y

Eccentricity (mathematics) (1,318 words) [view diff] exact match in snippet view article

locus of points whose distances to a point (the focus) and a line (the directrix) are in a constant ratio. That ratio is called the eccentricity, commonly

Cone (2,283 words) [view diff] exact match in snippet view article find links to article

perimeter of the base of a cone is called the "directrix", and each of the line segments between the directrix and apex is a "generatrix" or "generating line"

Cylinder (2,894 words) [view diff] exact match in snippet view article find links to article

called the directrix, a cylindrical surface is that surface traced out by a line, called the generatrix, not in the plane of the directrix, moving parallel

Midpoint theorem (conics) (198 words) [view diff] exact match in snippet view article

its center. For a parabola the diameter is always perpendicular to its directrix and for a pair of intersecting lines (from a degenerate conic) the diameter

Anthemius of Tralles (588 words) [view diff] exact match in snippet view article find links to article

the first practical use of the directrix: having given the focus and a double ordinate, he used the focus and directrix to obtain any number of points

Universal parabolic constant (725 words) [view diff] exact match in snippet view article find links to article

parameter in green. (The focus of the parabola is the point F and the directrix is the line L.) The value of P is P = ln ⁡ ( 1 + 2 ) + 2 = 2.29558714939

Jewel De'Nyle (767 words) [view diff] exact match in snippet view article find links to article

verify] 2004 Adam Film World Guide Award – Directrix of the Year 2005 Adam Film World Guide Award – Directrix of the Year 2007 NightMoves Hall of Fame inductee

Galactic Patrol (1,713 words) [view diff] exact match in snippet view article find links to article

flagship, the Directrix or Z9M9Z, had to be commissioned with extensive and advanced C3. It is explicitly stated in later novels that the Directrix/Z9M9Z is

Generalized helicoid (1,317 words) [view diff] exact match in snippet view article find links to article

the surface is a tangent developable surface and is generated by the directrix ( d cos ⁡ φ , d sin ⁡ φ , c φ ) {\displaystyle (d\cos \varphi ,d\sin \varphi

Generalized conic (2,992 words) [view diff] exact match in snippet view article find links to article

focus/directrix/eccentricity interpretation of conics, by retaining a single point F for the focus, any differentiable curve d serving as the directrix, and

Focal surface (474 words) [view diff] exact match in snippet view article find links to article

of the axis of rotation. The focal surface of a Torus consists of the directrix circle and the axis of rotation. The focal surface of a Dupin cyclide

Catalan surface (236 words) [view diff] exact match in snippet view article find links to article

= u. All the vectors L(u) are parallel to the same plane, called the directrix plane of the surface. This can be characterized by the condition: the

To Be One with You (649 words) [view diff] exact match in snippet view article find links to article

sessions was released digitally on July 3, with the songs "Nowhere I Am" & "Directrix", the first one also count with Flea and Irons. On July 17 it will be

Charles Thompson Sullivan (334 words) [view diff] exact match in snippet view article find links to article

Society. 15 (1914): 167–196. doi:10.1090/S0002-9947-1914-1500971-7 "Scroll directrix curves." Transactions of the American Mathematical Society 16 (1915):

Catenoid (728 words) [view diff] exact match in snippet view article find links to article

the plane. The catenoid is obtained by rotating a catenary about its directrix. It was found and proved to be minimal by Leonhard Euler in 1744. Early

Neusis construction (1,343 words) [view diff] exact match in snippet view article find links to article

"inclined" towards P. Point P is called the pole of the neusis, line l the directrix, or guiding line, and line m the catch line. Length a is called the diastema

Director circle (412 words) [view diff] exact match in snippet view article find links to article

of a parabola the director circle degenerates to a straight line, the directrix of the parabola. Akopyan & Zaslavsky 2007, pp. 12–13 Faulkner 1952, p

Dana Vespoli (823 words) [view diff] exact match in snippet view article find links to article

children with him. The couple divorced seven years later. 2007 AFWG Award – Directrix Of The Year 2013 NightMoves Award – Best Director, Non-Parody (Editor's

Locus (mathematics) (1,432 words) [view diff] exact match in snippet view article

of points equidistant from a fixed point (the focus) and a line (the directrix). Hyperbola: the set of points for each of which the absolute value of

Orthoptic (geometry) (2,491 words) [view diff] exact match in snippet view article

curve meet at a right angle. Examples: The orthoptic of a parabola is its directrix (proof: see below), The orthoptic of an ellipse x 2 a 2 + y 2 b 2 = 1

Concurrent lines (1,453 words) [view diff] exact match in snippet view article find links to article

hyperbola's center and that passes through the hyperbola's vertices; (2) either directrix; and (3) either of the asymptotes. In a tetrahedron, the four medians

Combat information center (1,383 words) [view diff] exact match in snippet view article find links to article

was taken “specifically, consciously, and directly” from the spaceship Directrix in the Lensman novels of E. E. Smith, Ph.D., and influenced by the works

Cal Laning (255 words) [view diff] exact match in snippet view article find links to article

was taken "specifically, consciously, and directly" from the spaceship Directrix in the Lensman novels of E. E. Smith, Ph.D., and influenced by the works

Tangent developable (549 words) [view diff] exact match in snippet view article find links to article

curve forms a boundary of the tangent developable, and is called its directrix or edge of regression. This curve is obtained by first developing the

Leighton Radio Telescopes (1,871 words) [view diff] exact match in snippet view article find links to article

the locus of points equidistant from the focal point and a directrix line. The directrix in this case was the upper side of the arm. After the parabolic

Ancient History (novel) (1,771 words) [view diff] exact match in snippet view article

equidistant from a focus and a directrix, the other as a cross-section of a cone. Later uses, along with "equidistant" and "directrix", are vague and metaphorical

Minimal surface of revolution (930 words) [view diff] exact match in snippet view article find links to article

optimal curve will necessarily be a catenary. The axis of revolution is the directrix of the catenary, and the minimal surface of revolution will thus be a

Hypercycle (geometry) (1,531 words) [view diff] exact match in snippet view article

whose distance from a focus F is equal to the distance to a hypercycle directrix that is not a line. Assuming a common axis for the hypercycles, the location

Belladonna (actress) (1,345 words) [view diff] exact match in snippet view article

Award Best Director (Non-Feature) Belladonna: Manhandled 2 AFWG Award Directrix of the Year Iodine Girl NightMoves Award Hall of Fame — Triple Play Award

Fortune's algorithm (1,415 words) [view diff] exact match in snippet view article find links to article

Mathematically, this means each parabola is formed by using the sweep line as the directrix and the input point as the focus. The algorithm maintains as data structures

Minimal surface (2,718 words) [view diff] exact match in snippet view article find links to article

catenoids: minimal surfaces made by rotating a catenary once around its directrix helicoids: A surface swept out by a line rotating with uniform velocity

Charles Herschel Sisam (563 words) [view diff] exact match in snippet view article find links to article

doi:10.2307/3028882. JSTOR 3028882. On septic scrolls having a rectilinear directrix. The Lord Baltimore Press. 1907. (Ph.D. thesis, 1905) with Virgil Snyder:

Semi-major and semi-minor axes (2,365 words) [view diff] exact match in snippet view article find links to article

the center to either focus and the distance from the center to either directrix. The semi-minor axis of an ellipse runs from the center of the ellipse

Line (geometry) (4,299 words) [view diff] exact match in snippet view article

which do not meet the conic at any point of the Euclidean plane; or a directrix, whose distance from a point helps to establish whether the point is on

Bisection (3,087 words) [view diff] exact match in snippet view article find links to article

point to the focus and the line from the point and perpendicular to the directrix. Each of the three medians of a triangle is a line segment going through

Euler line (2,615 words) [view diff] exact match in snippet view article find links to article

(two of them extended) of the triangle and has the Euler line as its directrix.: p. 63 Kimberling, Clark (1998). "Triangle centers and central triangles"

Steiner inellipse (1,435 words) [view diff] exact match in snippet view article find links to article

is tangent to the sides of the triangle and has the Euler line as its directrix.: Thm. 3 The foci of the Steiner inellipse of a triangle are the intersections

Mason (director) (1,140 words) [view diff] exact match in snippet view article

Year Ceremony Result Category Work 2003 AFW Award Won Directrix of the Year — AVN Award Nominated Best Director – Non-Feature Lady Fellatio in the Doghouse

Mutually orthogonal Latin squares (4,818 words) [view diff] exact match in snippet view article find links to article

This has gone under several names in the literature, formule directrix (Euler), directrix, 1-permutation, and diagonal amongst others. (Dénes & Keedwell

A Wedding (opera) (1,701 words) [view diff] exact match in snippet view article

2004 (Conductor: Dennis Russell Davies) Rita Billingsley, the wedding directrix soprano Maria Kanyova Nettie, grandmother of the groom mezzo-soprano Kathryn

Circle (5,861 words) [view diff] exact match in snippet view article find links to article

(geometry) Spieker circle Van Lamoen circle Eight-point circle of an orthodiagonal quadrilateral Director circle Directrix circle Villarceau circles

Glossary of classical algebraic geometry (11,125 words) [view diff] exact match in snippet view article find links to article

p. 26) directrix A straight line, or more generally a projective space, associated with some geometric configuration, such as the directrix of a conic

Quadratic function (2,924 words) [view diff] exact match in snippet view article find links to article

where a and the discriminant b2 − 4ac are positive, with Roots and y-intercept in red Vertex and axis of symmetry in blue Focus and directrix in pink

Dupin's theorem (1,658 words) [view diff] exact match in snippet view article find links to article

_{0},\theta )}. 1. pencil: Tori with the same directrix (green). 2. pencil: Cones containing the directrix circle of the torus with apexes on the axis of

Square root (6,180 words) [view diff] exact match in snippet view article find links to article

The graph of the function f(x) = √x, made up of half a parabola with a vertical directrix

Pappus of Alexandria (2,866 words) [view diff] exact match in snippet view article find links to article

the property of a conic (a hyperbola) with reference to the focus and directrix. In Book V, after an interesting preface concerning regular polygons,

Jan Baptist van Helmont (2,480 words) [view diff] exact match in snippet view article find links to article

body. Van Helmont described the archeus as "aura vitalis seminum, vitae directrix" ("The chief Workman [Archeus] consists of the conjoyning of the vitall

Josh Klinghoffer (5,522 words) [view diff] exact match in snippet view article find links to article

b/w Overflowing (2020) Obscene b/w Fairy Tale (2020) Nowhere I Am b/w Directrix (2020) I Don't Feel Well (2020) Mother Nature (EP) (2021) Stretch the

Torricelli's law (2,849 words) [view diff] exact match in snippet view article find links to article

cross is the sum of their source depths. Every jet (even if not leaving horizontally) takes a parabolic path whose directrix is the surface of the water.

Matrix representation of conic sections (3,167 words) [view diff] exact match in snippet view article find links to article

infinity. Also, the polar line of a focus of the conic is its corresponding directrix. Let line L be the polar line of point p with respect to the non-degenerate

Straightedge and compass construction (4,789 words) [view diff] exact match in snippet view article find links to article

drawing tool that can draw any conic with already constructed focus, directrix, and eccentricity. The same set of points can often be constructed using

Projective harmonic conjugate (2,611 words) [view diff] exact match in snippet view article find links to article

that of the tangent at P {\displaystyle P} . One can also sho that the directrix of the ellipse is the polar of the focus. In Galois geometry over a Galois

Geometric mean (4,871 words) [view diff] exact match in snippet view article find links to article

the center to either focus and the distance from the center to either directrix. Another way to think about it is as follows: Consider a circle with radius

Ioanna Sfekas-Karvelas (1,122 words) [view diff] exact match in snippet view article find links to article

Company. While teaching at the National Conservatory of Athens whose Directrix was Krino Kalomiris, daughter of Manolis Kalomiris, the head of the National

Mathia Collett (894 words) [view diff] exact match in snippet view article find links to article

"The dramatic party" (Det dramatiske Selskab), of which Mathia was the "directrix" (directrise). Mathia would again take in a foster daughter, Martine Elieson

Bézier curve (6,966 words) [view diff] exact match in snippet view article find links to article

and the axis, the line passing through G and perpendicular to CD is the directrix (solid green). The focus (F) is at the intersection of the axis and a

Problem of Apollonius (12,221 words) [view diff] exact match in snippet view article find links to article

constructs their directrix lines instead. For any hyperbola, the ratio of distances from a point Z to a focus A and to the directrix is a fixed constant

Catenary (6,644 words) [view diff] exact match in snippet view article find links to article

roulette curve traced by its focus is a catenary. The envelope of the directrix of the parabola is also a catenary. The involute from the vertex, that

Optical (musician) (2,697 words) [view diff] exact match in snippet view article

(ZTT 1999) Blanket - Urban Species ft Imogen Heap (Beechwood Music 1999) Directrix - Divine Styler (Mo Wax 2000) Sonar - Optical & Trace Remix (Prototype

Cardioid (4,746 words) [view diff] exact match in snippet view article find links to article

circle. (The generator circle is the inverse curve of the parabola's directrix.) This property gives rise to the following simple method to draw a cardioid:

Liquid crystal (11,258 words) [view diff] exact match in snippet view article find links to article

annihilate. Most nematic phases are uniaxial: they have one axis (called a directrix) that is longer and preferred, with the other two being equivalent (can

Stodola's cone law (1,180 words) [view diff] exact match in snippet view article find links to article

coordinate system has the shape of a degenerate quadric surface, the cone directrix being an ellipse. For a constant initial pressure p 01 {\displaystyle

E. E. Smith (6,941 words) [view diff] exact match in snippet view article find links to article

entire set-up was taken specifically, directly, and consciously from the Directrix. In your story, you reached the situation the Navy was in—more communication

Quadric (7,405 words) [view diff] exact match in snippet view article find links to article

Circle (e = 0), ellipse (e = 0.5), parabola (e = 1), and hyperbola (e = 2) with fixed focus F and directrix.

Differential geometry of surfaces (17,463 words) [view diff] exact match in snippet view article find links to article

which can be generated by the motion of a straight line in E3. Choosing a directrix on the surface, i.e. a smooth unit speed curve c(t) orthogonal to the

Glossary of aerospace engineering (24,140 words) [view diff] exact match in snippet view article find links to article

the area it has scanned. Latus rectum – is the chord parallel to the directrix and passing through a focus; its half-length is the semi-latus rectum

List of Latin verbs with English derivatives (126 words) [view diff] exact match in snippet view article find links to article

directive, director, directorate, directorial, directory, directress, directrix, dirigible, erect, erection, erector, escort, experrection, incorrect