You are looking at 1-20 of 101 entries  for:

  • All: perpendicular lines x
  • Science and technology x
clear all

View:

Overview

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 ...

perpendicular lines

perpendicular lines   Quick reference

The Concise Oxford Dictionary of Mathematics (5 ed.)

Reference type:
Subject Reference
Current Version:
2014

... 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 when m 1 =0 and m 2 is infinite, and vice...

perpendicular lines

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 ...
common perpendicular

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

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.
lines of force

lines of force  

Imaginary lines in a field of force that enable the direction and strength of the field to be visualized. They are used primarily in electric and magnetic fields; in electric fields they are ...
distance between two lines

distance between two lines  

(in 3-dimensional space)Let l 1 and l 2 be lines in space that do not intersect. There are two cases. If l 1 and l 2 are parallel, the distance between the two lines is the length of any line segment ...
equipotential

equipotential  

1 (line) The two-dimensional locus of all points with equal value for a potential field.2 (surface) The three-dimensional distribution of all points of equal value for a potential field. ...
graph paper

graph paper  

Paper printed with intersecting lines for drawing graphs or diagrams. The simplest form has equally spaced perpendicular lines, but one or both axis may use logarithmic scales, or scales derived from ...
oblique

oblique  

A pair of intersecting lines, to be taken, for example, as coordinate axes, are oblique if they are not (or at least not necessarily) perpendicular. Three concurrent lines, similarly, are oblique if ...
tangent plane

tangent plane  

Let P be a point on a smooth surface. The tangent at P to any curve through P on the surface is called a tangent line at P, and the tangent lines are all perpendicular to a line through P called the ...
hexahedrite

hexahedrite  

A class of iron meteorite, containing not more than 4–6% nickel. Hexahedrites consist of large cubic crystals of kamacite (an iron–nickel alloy) over 50 mm across, and they can be cleaved in three ...
cylinder

cylinder  

In elementary work, a cylinder, if taken, say, with its axis vertical, would be reckoned to consist of a circular base, a circular top of the same size, and the curved surface formed by the vertical ...
right-handed system

right-handed system  

Let Ox, Oy and Oz be three mutually perpendicular directed lines, intersecting at the point O. In the order Ox, Oy, Oz, they form a right-handed system if a person standing with their head in the ...
pi diagram

pi diagram  

A stereographic projection, used in the analysis of the orientation of folds, in which poles (points representing lines) perpendicular to folded bedding (π poles) are plotted, and the diagram rotated ...
symbiotic star

symbiotic star  

A star (in many cases a cataclysmic variable) that exhibits spectral lines at highly contrasting temperatures, such as those typical of a late-type red giant or supergiant (3000 K), and a dwarf B ...
cone

cone  

In elementary work, a cone usually consists of a circle as base, a vertex lying directly above the centre of the circle, and the curved surface formed by the line segments joining the vertex to the ...
orthogonal

orthogonal  

1 (of axes, lines, planes, surfaces, etc.) mutually at right angles; perpendicular to one another.2 (in statistics) (of a set of variates) being, or regarded as being, statistically independent.[...]
Lamb-dip spectroscopy

Lamb-dip spectroscopy  

A spectroscopic technique enabling the centres of absorption lines to be determined very precisely by making use of the Doppler shift associated with very rapidly moving molecules. An intense ...
Zeeman effect

Zeeman effect  

The splitting of the lines in a spectrum when the source of the spectrum is exposed to a magnetic field. It was discovered in 1896 by Pieter Zeeman (1865–1943). In the normal Zeeman effect a single ...
dihedral

dihedral  

An angle formed by the intersection of two planes (e.g. two faces of a polyhedron). The dihedral angle is the angle formed by taking a point on the line of intersection and drawing two lines from ...

View: