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## Perpendicular

Denoting the latest stage of English Gothic church architecture, prevalent from the late 14th to mid 16th centuries and characterized by broad arches, elaborate fan vaulting, and large ...

## perpendicular

At right angles to one another. Can be of two lines, two planes, a line and a plane, or a line and a surface.

## Perpendicular

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Denoting the latest stage of English Gothic church architecture, prevalent from the late 14th to mid 16th centuries and characterized by broad arches, elaborate fan vaulting, and large windows with ...

## common perpendicular

Let l 1 and l 2 be two straight lines in space that do not intersect and are not parallel. The common perpendicular of l 1 and l 2 is the straight line that meets both lines and is perpendicular to ...

## perpendicular bisector

The perpendicular bisector of a line segment AB is the straight line perpendicular to AB through the midpoint of AB.

## perpendicular planes

Two planes in 3-dimensional space are perpendicular if normals to the two planes are perpendicular. If n 1 and n 2 are vectors normal to the planes, this is so if n 1 . n 2=0.

## perpendicular distance

The distance from a point to a line or plane measured along the line perpendicular to the line or plane which passes through the given point. It will be the shortest distance between the point and ...

## perpendicular lines

In coordinate geometry of the plane, a useful necessary and sufficient condition that two lines, with gradients m 1 and m 2, are perpendicular is that m 1 m 2=−1. (This is taken to include the cases ...

## Perpendicular Axis Theorem

The following theorem about moments of inertia of a lamina:TheoremSuppose that a rigid body is in the form of a lamina lying in the plane z=0. Let I 0x, I 0y and I 0z be the moments of inertia of the ...

## angular shear strain

A measure of the angular rotation from two mutually perpendicular reference axes following simple shear. The shear strain is given as the tangent of angular shear ψ, and may be positive or negative ...

## angel light

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Small, roughly triangular light between subordinate arched window-tracery, especially in Perpendicular work.

## vector resolution

A method of determining component vectors from a resultant vector A graphical operation replaces a single vector with two perpendicular vectors in such a way that the vector composition of the two ...

## normal vector

(to a plane)A vector whose direction is perpendicular to the plane. A normal vector is perpendicular to any vector whose direction lies in the plane.

## Nernst effect

An effect in which a temperature gradient along an electric conductor or semiconductor placed in a perpendicular magnetic field, causes a potential difference to develop in the third perpendicular ...

## running

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Term describing anything linked in a smooth continuous progression or repeating asymmetrical flowing motifs, set on a band, each apparently leaning to one side or the other. Types of running ornament ...

## Robert Everard

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(fl. 1440–85).English master-mason. He seems to have succeeded James Woderofe at Norwich Cathedral c.1453, where he designed the stone spire and the nave vault (c. 1463–72). His Perpendicular lierne ...

## constant speed

A particle is moving with constant speed if the magnitude of the velocity is independent of time. Thus v. v=constant and this gives 2 v.(d v/dt)=0. Hence there are three possibilities: v=0, or d ...

## John Clyve

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(fl. 1362–92).English mason. He worked at Windsor Castle, Berks. (1362–3), and was master-mason of Worcester Cathedral Priory (1366–7). He was probably responsible for the tower, north porch, ...

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Type of ogee-headed bulbous top of a pinnacle or turret of late Perpendicular Tudor Gothic, as in Henry VII's Chapel at Westminster Abbey, London. The name is derived from its resemblance to a ...

## Edmund More

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(fl. 1523–d. 1536).English Freemason. Between 1523 and 1533 he worked on Bishop West's exquisite Chantry Chapel in Ely Cathedral, Cambs., a sumptuous work in which late-Perpendicular Gothic and early ...

## label

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1 Hood-moulding extending horizontally across the top of a late-Gothic Perpendicular or Tudor aperture, returning downwards vertically on each side and terminating in label-stops, often elaborately ...

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