| slovo | definícia |
oscillation
(encz) | oscillation,kmitání n: Zdeněk Brož |
oscillation
(encz) | oscillation,kolísání n: Zdeněk Brož |
oscillation
(encz) | oscillation,oscilace n: Zdeněk Brož |
Oscillation
(gcide) | Oscillation \Os`cil*la"tion\, n. [L. oscillatio a swinging.]
[1913 Webster]
1. The act of oscillating; a swinging or moving backward and
forward, like a pendulum; vibration.
[1913 Webster]
2. Fluctuation; variation; change back and forth.
[1913 Webster]
His mind oscillated, undoubtedly; but the extreme
points of the oscillation were not very remote.
--Macaulay.
[1913 Webster]
Axis of oscillation, Center of oscillation. See under
Axis, and Center.
[1913 Webster] |
oscillation
(wn) | oscillation
n 1: the process of oscillating between states
2: (physics) a regular periodic variation in value about a mean
[syn: oscillation, vibration]
3: a single complete execution of a periodically repeated
phenomenon; "a year constitutes a cycle of the seasons" [syn:
cycle, oscillation] |
| | podobné slovo | definícia |
oscillations
(encz) | oscillations,kmitání pl. Zdeněk Brožoscillations,oscilace pl. Zdeněk Brož |
pilot induced oscillation
(czen) | Pilot Induced Oscillation,PIO[zkr.] [voj.] Zdeněk Brož a automatický
překlad |
Axis of oscillation
(gcide) | Oscillation \Os`cil*la"tion\, n. [L. oscillatio a swinging.]
[1913 Webster]
1. The act of oscillating; a swinging or moving backward and
forward, like a pendulum; vibration.
[1913 Webster]
2. Fluctuation; variation; change back and forth.
[1913 Webster]
His mind oscillated, undoubtedly; but the extreme
points of the oscillation were not very remote.
--Macaulay.
[1913 Webster]
Axis of oscillation, Center of oscillation. See under
Axis, and Center.
[1913 Webster]Axis \Ax"is\, n.; pl. Axes. [L. axis axis, axle. See Axle.]
A straight line, real or imaginary, passing through a body,
on which it revolves, or may be supposed to revolve; a line
passing through a body or system around which the parts are
symmetrically arranged.
[1913 Webster]
2. (Math.) A straight line with respect to which the
different parts of a magnitude are symmetrically arranged;
as, the axis of a cylinder, i. e., the axis of a cone,
that is, the straight line joining the vertex and the
center of the base; the axis of a circle, any straight
line passing through the center.
[1913 Webster]
3. (Bot.) The stem; the central part, or longitudinal
support, on which organs or parts are arranged; the
central line of any body. --Gray.
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4. (Anat.)
(a) The second vertebra of the neck, or {vertebra
dentata}.
(b) Also used of the body only of the vertebra, which is
prolonged anteriorly within the foramen of the first
vertebra or atlas, so as to form the odontoid process
or peg which serves as a pivot for the atlas and head
to turn upon.
[1913 Webster]
5. (Crystallog.) One of several imaginary lines, assumed in
describing the position of the planes by which a crystal
is bounded.
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6. (Fine Arts) The primary or secondary central line of any
design.
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Anticlinal axis (Geol.), a line or ridge from which the
strata slope downward on the two opposite sides.
Synclinal axis, a line from which the strata slope upward
in opposite directions, so as to form a valley.
Axis cylinder (Anat.), the neuraxis or essential, central
substance of a nerve fiber; -- called also axis band,
axial fiber, and cylinder axis.
Axis in peritrochio, the wheel and axle, one of the
mechanical powers.
Axis of a curve (Geom.), a straight line which bisects a
system of parallel chords of a curve; called a {principal
axis}, when cutting them at right angles, in which case it
divides the curve into two symmetrical portions, as in the
parabola, which has one such axis, the ellipse, which has
two, or the circle, which has an infinite number. The two
axes of the ellipse are the major axis and the {minor
axis}, and the two axes of the hyperbola are the
transverse axis and the conjugate axis.
Axis of a lens, the straight line passing through its
center and perpendicular to its surfaces.
Axis of a microscope or Axis of a telescope, the straight
line with which coincide the axes of the several lenses
which compose it.
Axes of co["o]rdinates in a plane, two straight lines
intersecting each other, to which points are referred for
the purpose of determining their relative position: they
are either rectangular or oblique.
Axes of co["o]rdinates in space, the three straight lines
in which the co["o]rdinate planes intersect each other.
Axis of a balance, that line about which it turns.
Axis of oscillation, of a pendulum, a right line passing
through the center about which it vibrates, and
perpendicular to the plane of vibration.
Axis of polarization, the central line around which the
prismatic rings or curves are arranged. --Brewster.
Axis of revolution (Descriptive Geom.), a straight line
about which some line or plane is revolved, so that the
several points of the line or plane shall describe circles
with their centers in the fixed line, and their planes
perpendicular to it, the line describing a surface of
revolution, and the plane a solid of revolution.
Axis of symmetry (Geom.), any line in a plane figure which
divides the figure into two such parts that one part, when
folded over along the axis, shall coincide with the other
part.
Axis of the equator, ecliptic, horizon (or other circle
considered with reference to the sphere on which it lies),
the diameter of the sphere which is perpendicular to the
plane of the circle. --Hutton.
Axis of the Ionic capital (Arch.), a line passing
perpendicularly through the middle of the eye of the
volute.
Neutral axis (Mech.), the line of demarcation between the
horizontal elastic forces of tension and compression,
exerted by the fibers in any cross section of a girder.
Optic axis of a crystal, the direction in which a ray of
transmitted light suffers no double refraction. All
crystals, not of the isometric system, are either uniaxial
or biaxial.
Optic axis, Visual axis (Opt.), the straight line passing
through the center of the pupil, and perpendicular to the
surface of the eye.
Radical axis of two circles (Geom.), the straight line
perpendicular to the line joining their centers and such
that the tangents from any point of it to the two circles
shall be equal to each other.
Spiral axis (Arch.), the axis of a twisted column drawn
spirally in order to trace the circumvolutions without.
Axis of abscissas and Axis of ordinates. See Abscissa.
[1913 Webster] |
Center of oscillation
(gcide) | Oscillation \Os`cil*la"tion\, n. [L. oscillatio a swinging.]
[1913 Webster]
1. The act of oscillating; a swinging or moving backward and
forward, like a pendulum; vibration.
[1913 Webster]
2. Fluctuation; variation; change back and forth.
[1913 Webster]
His mind oscillated, undoubtedly; but the extreme
points of the oscillation were not very remote.
--Macaulay.
[1913 Webster]
Axis of oscillation, Center of oscillation. See under
Axis, and Center.
[1913 Webster]center \cen"ter\ (s[e^]n"t[~e]r), n. [F. centre, fr. L. centrum,
fr. Gr. ke`ntron any sharp point, the point round which a
circle is described, fr. kentei^n to prick, goad.]
1. A point equally distant from the extremities of a line,
figure, or body, or from all parts of the circumference of
a circle; the middle point or place.
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2. The middle or central portion of anything.
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3. A principal or important point of concentration; the
nucleus around which things are gathered or to which they
tend; an object of attention, action, or force; as, a
center of attaction.
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4. The earth. [Obs.] --Shak.
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5. Those members of a legislative assembly (as in France) who
support the existing government. They sit in the middle of
the legislative chamber, opposite the presiding officer,
between the conservatives or monarchists, who sit on the
right of the speaker, and the radicals or advanced
republicans who occupy the seats on his left, See Right,
and Left.
[1913 Webster]
6. (Arch.) A temporary structure upon which the materials of
a vault or arch are supported in position until the work
becomes self-supporting.
[1913 Webster]
7. (Mech.)
(a) One of the two conical steel pins, in a lathe, etc.,
upon which the work is held, and about which it
revolves.
(b) A conical recess, or indentation, in the end of a
shaft or other work, to receive the point of a center,
on which the work can turn, as in a lathe.
[1913 Webster]
Note: In a lathe the
live center is in the spindle of the head stock; the
dead center is on the tail stock.
Planer centers are stocks carrying centers, when the object
to be planed must be turned on its axis.
[1913 Webster]
Center of an army, the body or troops occupying the place
in the line between the wings.
Center of a curve or Center of a surface (Geom.)
(a) A point such that every line drawn through the point
and terminated by the curve or surface is bisected at
the point.
(b) The fixed point of reference in polar coordinates. See
Coordinates.
Center of curvature of a curve (Geom.), the center of that
circle which has at any given point of the curve closer
contact with the curve than has any other circle whatever.
See Circle.
Center of a fleet, the division or column between the van
and rear, or between the weather division and the lee.
Center of gravity (Mech.), that point of a body about which
all its parts can be balanced, or which being supported,
the whole body will remain at rest, though acted upon by
gravity.
Center of gyration (Mech.), that point in a rotating body
at which the whole mass might be concentrated
(theoretically) without altering the resistance of the
intertia of the body to angular acceleration or
retardation.
Center of inertia (Mech.), the center of gravity of a body
or system of bodies.
Center of motion, the point which remains at rest, while
all the other parts of a body move round it.
Center of oscillation, the point at which, if the whole
matter of a suspended body were collected, the time of
oscillation would be the same as it is in the actual form
and state of the body.
Center of percussion, that point in a body moving about a
fixed axis at which it may strike an obstacle without
communicating a shock to the axis.
Center of pressure (Hydros.), that point in a surface
pressed by a fluid, at which, if a force equal to the
whole pressure and in the same line be applied in a
contrary direction, it will balance or counteract the
whole pressure of the fluid.
[1913 Webster] Center |
Oscillation
(gcide) | Oscillation \Os`cil*la"tion\, n. [L. oscillatio a swinging.]
[1913 Webster]
1. The act of oscillating; a swinging or moving backward and
forward, like a pendulum; vibration.
[1913 Webster]
2. Fluctuation; variation; change back and forth.
[1913 Webster]
His mind oscillated, undoubtedly; but the extreme
points of the oscillation were not very remote.
--Macaulay.
[1913 Webster]
Axis of oscillation, Center of oscillation. See under
Axis, and Center.
[1913 Webster] |
el nino southern oscillation
(wn) | El Nino southern oscillation
n 1: a more intense El Nino that occurs every few years when the
welling up of cold nutrient-rich water does not occur;
kills plankton and fish and affects weather patterns |
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