Found 1 items, similar to Conjugate diameters.
English → English (gcide)
Definition: Conjugate diameters
Conjugate
\Con"ju*gate\, a. [L. conjugatus, p. p. or conjugare
to unite; con- + jugare to join, yoke, marry, jugum yoke;
akin to jungere to join. See
Join.]
1. United in pairs; yoked together; coupled.
[1913 Webster]
2. (Bot.) In single pairs; coupled.
[1913 Webster]
3. (Chem.) Containing two or more compounds or radicals
supposed to act the part of a single one. [R.]
[1913 Webster]
4. (Gram.) Agreeing in derivation and radical signification;
-- said of words.
[1913 Webster]
5. (Math.) Presenting themselves simultaneously and having
reciprocal properties; -- frequently used in pure and
applied mathematics with reference to two quantities,
points, lines, axes, curves, etc.
[1913 Webster]
Conjugate axis of a hyperbola (Math.), the line through the
center of the curve, perpendicular to the line through the
two foci.
Conjugate diameters (Conic Sections), two diameters of an
ellipse or hyperbola such that each bisects all chords
drawn parallel to the other.
Conjugate focus (Opt.) See under
Focus.
Conjugate mirrors (Optics), two mirrors so placed that rays
from the focus of one are received at the focus of the
other, especially two concave mirrors so placed that rays
proceeding from the principal focus of one and reflected
in a parallel beam are received upon the other and brought
to the principal focus.
Conjugate point (Geom.), an acnode. See
Acnode, and
Double point.
Self-conjugate triangle (Conic Sections), a triangle each
of whose vertices is the pole of the opposite side with
reference to a conic.
[1913 Webster]
Diameter
\Di*am"e*ter\, n. [F. diam[`e]tre, L. diametros, fr.
Gr. ?; dia` through + ? measure. See
Meter.]
1. (Geom.)
(a) Any right line passing through the center of a figure
or body, as a circle, conic section, sphere, cube,
etc., and terminated by the opposite boundaries; a
straight line which bisects a system of parallel
chords drawn in a curve.
(b) A diametral plane.
[1913 Webster]
2. The length of a straight line through the center of an
object from side to side; width; thickness; as, the
diameter of a tree or rock.
[1913 Webster]
Note: In an elongated object the diameter is usually taken at
right angles to the longer axis.
[1913 Webster]
3. (Arch.) The distance through the lower part of the shaft
of a column, used as a standard measure for all parts of
the order. See
Module.
[1913 Webster]
Conjugate diameters. See under
Conjugate.
[1913 Webster]