| slovo | definícia |
diameter
(mass) | diameter
- priemer |
diameter
(encz) | diameter,průměr [mat.] [tech.] web |
Diameter
(gcide) | 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.
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Note: In an elongated object the diameter is usually taken at
right angles to the longer axis.
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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.
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Conjugate diameters. See under Conjugate.
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diameter
(wn) | diameter
n 1: the length of a straight line passing through the center of
a circle and connecting two points on the circumference
[syn: diameter, diam]
2: a straight line connecting the center of a circle with two
points on its perimeter (or the center of a sphere with two
points on its surface) |
diameter
(foldoc) | diameter
The diameter of a graph is the maximum value of the minimum
distance between any two nodes.
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| | podobné slovo | definícia |
diameter
(mass) | diameter
- priemer |
diameter
(encz) | diameter,průměr [mat.] [tech.] web |
diameters
(encz) | diameters,průměry n: pl. Zdeněk Brož |
semidiameter
(encz) | semidiameter, n: |
apparent diameter
(gcide) | Magnitude \Mag"ni*tude\, n. [L. magnitudo, from magnus great.
See Master, and cf. Maxim.]
1. Extent of dimensions; size; -- applied to things that have
length, breadth, and thickness.
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Conceive those particles of bodies to be so disposed
amongst themselves, that the intervals of empty
spaces between them may be equal in magnitude to
them all. --Sir I.
Newton.
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2. (Geom.) That which has one or more of the three
dimensions, length, breadth, and thickness.
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3. Anything of which greater or less can be predicated, as
time, weight, force, and the like.
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4. Greatness; grandeur. "With plain, heroic magnitude of
mind." --Milton.
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5. Greatness, in reference to influence or effect;
importance; as, an affair of magnitude.
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The magnitude of his designs. --Bp. Horsley.
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6. (Astron.) See magnitude of a star, below.
[PJC]
Apparent magnitude
1. (Opt.), the angular breadth of an object viewed as
measured by the angle which it subtends at the eye of the
observer; -- called also apparent diameter.
2. (Astron.) Same as magnitude of a star, below.
Magnitude of a star (Astron.), the rank of a star with
respect to brightness. About twenty very bright stars are
said to be of first magnitude, the stars of the sixth
magnitude being just visible to the naked eye; called also
visual magnitude, apparent magnitude, and simply
magnitude. Stars observable only in the telescope are
classified down to below the twelfth magnitude. The
difference in actual brightness between magnitudes is now
specified as a factor of 2.512, i.e. the difference in
brightness is 100 for stars differing by five magnitudes.
[1913 Webster +PJC] |
Conjugate diameters
(gcide) | 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.
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2. (Bot.) In single pairs; coupled.
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3. (Chem.) Containing two or more compounds or radicals
supposed to act the part of a single one. [R.]
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4. (Gram.) Agreeing in derivation and radical signification;
-- said of words.
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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.
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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] |
Semidiameter
(gcide) | Semidiameter \Sem`i*di*am"e*ter\, n. (Math.)
Half of a diameter; a right line, or the length of a right
line, drawn from the center of a circle, a sphere, or other
curved figure, to its circumference or periphery; a radius.
[1913 Webster] |
diameter
(wn) | diameter
n 1: the length of a straight line passing through the center of
a circle and connecting two points on the circumference
[syn: diameter, diam]
2: a straight line connecting the center of a circle with two
points on its perimeter (or the center of a sphere with two
points on its surface) |
semidiameter
(wn) | semidiameter
n 1: the apparent radius of a celestial body when viewed as a
disc from the earth |
diameter
(foldoc) | diameter
The diameter of a graph is the maximum value of the minimum
distance between any two nodes.
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