| slovo | definícia |
velocity
(mass) | velocity
- rýchlosť |
velocity
(encz) | velocity,rychlost n: Zdeněk Brož |
Velocity
(gcide) | Velocity \Ve*loc"i*ty\, n.; pl. Velocities. [L. velocitas,
from velox, -ocis, swift, quick; perhaps akin to volare to
fly (see Volatile): cf. F. v['e]locit['e].]
[1913 Webster]
1. Quickness of motion; swiftness; speed; celerity; rapidity;
as, the velocity of wind; the velocity of a planet or
comet in its orbit or course; the velocity of a cannon
ball; the velocity of light.
[1913 Webster]
Note: In such phrases, velocity is more generally used than
celerity. We apply celerity to animals; as, a horse or
an ostrich runs with celerity; but bodies moving in the
air or in ethereal space move with greater or less
velocity, not celerity. This usage is arbitrary, and
perhaps not universal.
[1913 Webster]
2. (Mech.) Rate of motion; the relation of motion to time,
measured by the number of units of space passed over by a
moving body or point in a unit of time, usually the number
of feet passed over in a second. See the Note under
Speed.
[1913 Webster]
Angular velocity. See under Angular.
Initial velocity, the velocity of a moving body at
starting; especially, the velocity of a projectile as it
leaves the mouth of a firearm from which it is discharged.
Relative velocity, the velocity with which a body
approaches or recedes from another body, whether both are
moving or only one.
Uniform velocity, velocity in which the same number of
units of space are described in each successive unit of
time.
Variable velocity, velocity in which the space described
varies from instant to instant, either increasing or
decreasing; -- in the former case called accelerated
velocity, in the latter, retarded velocity; the
acceleration or retardation itself being also either
uniform or variable.
Virtual velocity. See under Virtual.
[1913 Webster]
Note: In variable velocity, the velocity, strictly, at any
given instant, is the rate of motion at that instant,
and is expressed by the units of space, which, if the
velocity at that instant were continued uniform during
a unit of time, would be described in the unit of time;
thus, the velocity of a falling body at a given instant
is the number of feet which, if the motion which the
body has at that instant were continued uniformly for
one second, it would pass through in the second. The
scientific sense of velocity differs from the popular
sense in being applied to all rates of motion, however
slow, while the latter implies more or less rapidity or
quickness of motion.
[1913 Webster]
Syn: Swiftness; celerity; rapidity; fleetness; speed.
[1913 Webster] |
velocity
(wn) | velocity
n 1: distance travelled per unit time [syn: speed, velocity] |
| | podobné slovo | definícia |
escape velocity
(encz) | escape velocity,úniková rychlost |
ground velocity
(encz) | ground velocity,dnová rychlost [eko.] RNDr. Pavel Piskač |
high-velocity
(encz) | high-velocity, adj: |
hypervelocity
(encz) | hypervelocity, n: |
income velocity of money
(encz) | income velocity of money, |
muzzle velocity
(encz) | muzzle velocity, n: |
non-eroding water velocity
(encz) | non-eroding water velocity,nevymílací rychlost vody [eko.] RNDr. Pavel
Piskač |
peculiar velocity
(encz) | peculiar velocity, n: |
radial velocity
(encz) | radial velocity, n: |
spatial velocity
(encz) | spatial velocity,prostorová rychlost (hydrosystém) [eko.] RNDr. Pavel
Piskač |
terminal velocity
(encz) | terminal velocity, n: |
velocity of circulation
(encz) | velocity of circulation, |
velocity of money
(encz) | velocity of money, |
Angular velocity
(gcide) | Velocity \Ve*loc"i*ty\, n.; pl. Velocities. [L. velocitas,
from velox, -ocis, swift, quick; perhaps akin to volare to
fly (see Volatile): cf. F. v['e]locit['e].]
[1913 Webster]
1. Quickness of motion; swiftness; speed; celerity; rapidity;
as, the velocity of wind; the velocity of a planet or
comet in its orbit or course; the velocity of a cannon
ball; the velocity of light.
[1913 Webster]
Note: In such phrases, velocity is more generally used than
celerity. We apply celerity to animals; as, a horse or
an ostrich runs with celerity; but bodies moving in the
air or in ethereal space move with greater or less
velocity, not celerity. This usage is arbitrary, and
perhaps not universal.
[1913 Webster]
2. (Mech.) Rate of motion; the relation of motion to time,
measured by the number of units of space passed over by a
moving body or point in a unit of time, usually the number
of feet passed over in a second. See the Note under
Speed.
[1913 Webster]
Angular velocity. See under Angular.
Initial velocity, the velocity of a moving body at
starting; especially, the velocity of a projectile as it
leaves the mouth of a firearm from which it is discharged.
Relative velocity, the velocity with which a body
approaches or recedes from another body, whether both are
moving or only one.
Uniform velocity, velocity in which the same number of
units of space are described in each successive unit of
time.
Variable velocity, velocity in which the space described
varies from instant to instant, either increasing or
decreasing; -- in the former case called accelerated
velocity, in the latter, retarded velocity; the
acceleration or retardation itself being also either
uniform or variable.
Virtual velocity. See under Virtual.
[1913 Webster]
Note: In variable velocity, the velocity, strictly, at any
given instant, is the rate of motion at that instant,
and is expressed by the units of space, which, if the
velocity at that instant were continued uniform during
a unit of time, would be described in the unit of time;
thus, the velocity of a falling body at a given instant
is the number of feet which, if the motion which the
body has at that instant were continued uniformly for
one second, it would pass through in the second. The
scientific sense of velocity differs from the popular
sense in being applied to all rates of motion, however
slow, while the latter implies more or less rapidity or
quickness of motion.
[1913 Webster]
Syn: Swiftness; celerity; rapidity; fleetness; speed.
[1913 Webster]Angular \An"gu*lar\, a. [L. angularis, fr. angulus angle,
corner. See Angle.]
1. Relating to an angle or to angles; having an angle or
angles; forming an angle or corner; sharp-cornered;
pointed; as, an angular figure.
[1913 Webster]
2. Measured by an angle; as, angular distance.
[1913 Webster]
3. Fig.: Lean; lank; raw-boned; ungraceful; sharp and stiff
in character; as, remarkably angular in his habits and
appearance; an angular female.
[1913 Webster]
Angular aperture, Angular distance. See Aperture,
Distance.
Angular motion, the motion of a body about a fixed point or
fixed axis, as of a planet or pendulum. It is equal to the
angle passed over at the point or axis by a line drawn to
the body.
Angular point, the point at which the sides of the angle
meet; the vertex.
Angular velocity, the ratio of anuglar motion to the time
employed in describing.
[1913 Webster] |
escape velocity
(gcide) | escape velocity \es*cape" vel*o"ci*ty\, n. (Physics)
The minimum velocity at which an object must be moving in
order for it to overcome the gravitational attraction of a
massive celestial body, such as the earth or the sun, and
escape beyond its gravitational field into free space. The
velocity is calculated as though attained instantaneously at
the surface of the celestial body, and is pointed directly
away from its center, and neglecting effects of atmospheric
friction. Rockets, which accelerate gradually and are moving
rapidly at a high altitude when their fuel is exhausted or
their engines shut off, may escape even if moving slightly
slower at that point than the surface escape velocity.
Compare orbital velocity.
[PJC]
Note: The escape velocity at the surface of the earth is 11.2
km/sec (25,100 miles per hour), at the moon's surface
is 2.4 km/sec, and at the sun's surface is 617.7
km/sec. The escape velocity is calculated as:
Ve = root2Rg
where R is the radius of the celestial body and g is
the acceleration due to the gravitational field at its
surface. The peculiar chracteristic of a black hole
is that the escape velocity at its "surface" (called
its "event horizon") is greater than the speed of
light. Therefore nothing, not even light, may escape
from it. --Dict. Sci. Tech.
[PJC] |
Initial velocity
(gcide) | Velocity \Ve*loc"i*ty\, n.; pl. Velocities. [L. velocitas,
from velox, -ocis, swift, quick; perhaps akin to volare to
fly (see Volatile): cf. F. v['e]locit['e].]
[1913 Webster]
1. Quickness of motion; swiftness; speed; celerity; rapidity;
as, the velocity of wind; the velocity of a planet or
comet in its orbit or course; the velocity of a cannon
ball; the velocity of light.
[1913 Webster]
Note: In such phrases, velocity is more generally used than
celerity. We apply celerity to animals; as, a horse or
an ostrich runs with celerity; but bodies moving in the
air or in ethereal space move with greater or less
velocity, not celerity. This usage is arbitrary, and
perhaps not universal.
[1913 Webster]
2. (Mech.) Rate of motion; the relation of motion to time,
measured by the number of units of space passed over by a
moving body or point in a unit of time, usually the number
of feet passed over in a second. See the Note under
Speed.
[1913 Webster]
Angular velocity. See under Angular.
Initial velocity, the velocity of a moving body at
starting; especially, the velocity of a projectile as it
leaves the mouth of a firearm from which it is discharged.
Relative velocity, the velocity with which a body
approaches or recedes from another body, whether both are
moving or only one.
Uniform velocity, velocity in which the same number of
units of space are described in each successive unit of
time.
Variable velocity, velocity in which the space described
varies from instant to instant, either increasing or
decreasing; -- in the former case called accelerated
velocity, in the latter, retarded velocity; the
acceleration or retardation itself being also either
uniform or variable.
Virtual velocity. See under Virtual.
[1913 Webster]
Note: In variable velocity, the velocity, strictly, at any
given instant, is the rate of motion at that instant,
and is expressed by the units of space, which, if the
velocity at that instant were continued uniform during
a unit of time, would be described in the unit of time;
thus, the velocity of a falling body at a given instant
is the number of feet which, if the motion which the
body has at that instant were continued uniformly for
one second, it would pass through in the second. The
scientific sense of velocity differs from the popular
sense in being applied to all rates of motion, however
slow, while the latter implies more or less rapidity or
quickness of motion.
[1913 Webster]
Syn: Swiftness; celerity; rapidity; fleetness; speed.
[1913 Webster] |
Paracentric velocity
(gcide) | paracentric \par`a*cen"tric\ (p[a^]r`[.a]*s[e^]n"tr[i^]k),
paracentrical \par`a*cen"tric*al\
(p[a^]r`[.a]*s[e^]n"tr[i^]*kal), a. [Pref. para- + centric,
-ical: cf. F. paracentrique.]
Deviating from circularity; changing the distance from a
center.
[1913 Webster]
Paracentric curve (Math.), a curve having the property
that, when its plane is placed vertically, a body
descending along it, by the force of gravity, will
approach to, or recede from, a fixed point or center, by
equal distances in equal times; -- called also a
paracentric.
Paracentric motion or Paracentric velocity, the motion or
velocity of a revolving body, such as a planet, by which
it approaches to, or recedes from, the center, without
reference to its motion in space, or to its motion as
reckoned in any other direction.
[1913 Webster] |
Relative velocity
(gcide) | Velocity \Ve*loc"i*ty\, n.; pl. Velocities. [L. velocitas,
from velox, -ocis, swift, quick; perhaps akin to volare to
fly (see Volatile): cf. F. v['e]locit['e].]
[1913 Webster]
1. Quickness of motion; swiftness; speed; celerity; rapidity;
as, the velocity of wind; the velocity of a planet or
comet in its orbit or course; the velocity of a cannon
ball; the velocity of light.
[1913 Webster]
Note: In such phrases, velocity is more generally used than
celerity. We apply celerity to animals; as, a horse or
an ostrich runs with celerity; but bodies moving in the
air or in ethereal space move with greater or less
velocity, not celerity. This usage is arbitrary, and
perhaps not universal.
[1913 Webster]
2. (Mech.) Rate of motion; the relation of motion to time,
measured by the number of units of space passed over by a
moving body or point in a unit of time, usually the number
of feet passed over in a second. See the Note under
Speed.
[1913 Webster]
Angular velocity. See under Angular.
Initial velocity, the velocity of a moving body at
starting; especially, the velocity of a projectile as it
leaves the mouth of a firearm from which it is discharged.
Relative velocity, the velocity with which a body
approaches or recedes from another body, whether both are
moving or only one.
Uniform velocity, velocity in which the same number of
units of space are described in each successive unit of
time.
Variable velocity, velocity in which the space described
varies from instant to instant, either increasing or
decreasing; -- in the former case called accelerated
velocity, in the latter, retarded velocity; the
acceleration or retardation itself being also either
uniform or variable.
Virtual velocity. See under Virtual.
[1913 Webster]
Note: In variable velocity, the velocity, strictly, at any
given instant, is the rate of motion at that instant,
and is expressed by the units of space, which, if the
velocity at that instant were continued uniform during
a unit of time, would be described in the unit of time;
thus, the velocity of a falling body at a given instant
is the number of feet which, if the motion which the
body has at that instant were continued uniformly for
one second, it would pass through in the second. The
scientific sense of velocity differs from the popular
sense in being applied to all rates of motion, however
slow, while the latter implies more or less rapidity or
quickness of motion.
[1913 Webster]
Syn: Swiftness; celerity; rapidity; fleetness; speed.
[1913 Webster] |
Terminal velocity
(gcide) | Terminal \Ter"mi*nal\ (-nal), a. [L. terminals: cf. F. terminal.
See Term, n.]
1. Of or pertaining to the end or extremity; forming the
extremity; as, a terminal edge.
[1913 Webster]
2. (Bot.) Growing at the end of a branch or stem;
terminating; as, a terminal bud, flower, or spike.
[1913 Webster]
3. (Railroads) Pertaining to a railroad terminal; connected
with the receipt or delivery of freight; as, terminal
charges.
[Webster 1913 Suppl.]
Terminal moraine. See the Note under Moraine.
Terminal statue. See Terminus, n., 2 and 3.
Terminal velocity.
(a) The velocity acquired at the end of a body's motion.
(b) The limit toward which the velocity of a body
approaches, as of a body falling through the air.
[1913 Webster] |
Uniform velocity
(gcide) | Velocity \Ve*loc"i*ty\, n.; pl. Velocities. [L. velocitas,
from velox, -ocis, swift, quick; perhaps akin to volare to
fly (see Volatile): cf. F. v['e]locit['e].]
[1913 Webster]
1. Quickness of motion; swiftness; speed; celerity; rapidity;
as, the velocity of wind; the velocity of a planet or
comet in its orbit or course; the velocity of a cannon
ball; the velocity of light.
[1913 Webster]
Note: In such phrases, velocity is more generally used than
celerity. We apply celerity to animals; as, a horse or
an ostrich runs with celerity; but bodies moving in the
air or in ethereal space move with greater or less
velocity, not celerity. This usage is arbitrary, and
perhaps not universal.
[1913 Webster]
2. (Mech.) Rate of motion; the relation of motion to time,
measured by the number of units of space passed over by a
moving body or point in a unit of time, usually the number
of feet passed over in a second. See the Note under
Speed.
[1913 Webster]
Angular velocity. See under Angular.
Initial velocity, the velocity of a moving body at
starting; especially, the velocity of a projectile as it
leaves the mouth of a firearm from which it is discharged.
Relative velocity, the velocity with which a body
approaches or recedes from another body, whether both are
moving or only one.
Uniform velocity, velocity in which the same number of
units of space are described in each successive unit of
time.
Variable velocity, velocity in which the space described
varies from instant to instant, either increasing or
decreasing; -- in the former case called accelerated
velocity, in the latter, retarded velocity; the
acceleration or retardation itself being also either
uniform or variable.
Virtual velocity. See under Virtual.
[1913 Webster]
Note: In variable velocity, the velocity, strictly, at any
given instant, is the rate of motion at that instant,
and is expressed by the units of space, which, if the
velocity at that instant were continued uniform during
a unit of time, would be described in the unit of time;
thus, the velocity of a falling body at a given instant
is the number of feet which, if the motion which the
body has at that instant were continued uniformly for
one second, it would pass through in the second. The
scientific sense of velocity differs from the popular
sense in being applied to all rates of motion, however
slow, while the latter implies more or less rapidity or
quickness of motion.
[1913 Webster]
Syn: Swiftness; celerity; rapidity; fleetness; speed.
[1913 Webster] |
Variable velocity
(gcide) | Velocity \Ve*loc"i*ty\, n.; pl. Velocities. [L. velocitas,
from velox, -ocis, swift, quick; perhaps akin to volare to
fly (see Volatile): cf. F. v['e]locit['e].]
[1913 Webster]
1. Quickness of motion; swiftness; speed; celerity; rapidity;
as, the velocity of wind; the velocity of a planet or
comet in its orbit or course; the velocity of a cannon
ball; the velocity of light.
[1913 Webster]
Note: In such phrases, velocity is more generally used than
celerity. We apply celerity to animals; as, a horse or
an ostrich runs with celerity; but bodies moving in the
air or in ethereal space move with greater or less
velocity, not celerity. This usage is arbitrary, and
perhaps not universal.
[1913 Webster]
2. (Mech.) Rate of motion; the relation of motion to time,
measured by the number of units of space passed over by a
moving body or point in a unit of time, usually the number
of feet passed over in a second. See the Note under
Speed.
[1913 Webster]
Angular velocity. See under Angular.
Initial velocity, the velocity of a moving body at
starting; especially, the velocity of a projectile as it
leaves the mouth of a firearm from which it is discharged.
Relative velocity, the velocity with which a body
approaches or recedes from another body, whether both are
moving or only one.
Uniform velocity, velocity in which the same number of
units of space are described in each successive unit of
time.
Variable velocity, velocity in which the space described
varies from instant to instant, either increasing or
decreasing; -- in the former case called accelerated
velocity, in the latter, retarded velocity; the
acceleration or retardation itself being also either
uniform or variable.
Virtual velocity. See under Virtual.
[1913 Webster]
Note: In variable velocity, the velocity, strictly, at any
given instant, is the rate of motion at that instant,
and is expressed by the units of space, which, if the
velocity at that instant were continued uniform during
a unit of time, would be described in the unit of time;
thus, the velocity of a falling body at a given instant
is the number of feet which, if the motion which the
body has at that instant were continued uniformly for
one second, it would pass through in the second. The
scientific sense of velocity differs from the popular
sense in being applied to all rates of motion, however
slow, while the latter implies more or less rapidity or
quickness of motion.
[1913 Webster]
Syn: Swiftness; celerity; rapidity; fleetness; speed.
[1913 Webster] |
Velocity
(gcide) | Velocity \Ve*loc"i*ty\, n.; pl. Velocities. [L. velocitas,
from velox, -ocis, swift, quick; perhaps akin to volare to
fly (see Volatile): cf. F. v['e]locit['e].]
[1913 Webster]
1. Quickness of motion; swiftness; speed; celerity; rapidity;
as, the velocity of wind; the velocity of a planet or
comet in its orbit or course; the velocity of a cannon
ball; the velocity of light.
[1913 Webster]
Note: In such phrases, velocity is more generally used than
celerity. We apply celerity to animals; as, a horse or
an ostrich runs with celerity; but bodies moving in the
air or in ethereal space move with greater or less
velocity, not celerity. This usage is arbitrary, and
perhaps not universal.
[1913 Webster]
2. (Mech.) Rate of motion; the relation of motion to time,
measured by the number of units of space passed over by a
moving body or point in a unit of time, usually the number
of feet passed over in a second. See the Note under
Speed.
[1913 Webster]
Angular velocity. See under Angular.
Initial velocity, the velocity of a moving body at
starting; especially, the velocity of a projectile as it
leaves the mouth of a firearm from which it is discharged.
Relative velocity, the velocity with which a body
approaches or recedes from another body, whether both are
moving or only one.
Uniform velocity, velocity in which the same number of
units of space are described in each successive unit of
time.
Variable velocity, velocity in which the space described
varies from instant to instant, either increasing or
decreasing; -- in the former case called accelerated
velocity, in the latter, retarded velocity; the
acceleration or retardation itself being also either
uniform or variable.
Virtual velocity. See under Virtual.
[1913 Webster]
Note: In variable velocity, the velocity, strictly, at any
given instant, is the rate of motion at that instant,
and is expressed by the units of space, which, if the
velocity at that instant were continued uniform during
a unit of time, would be described in the unit of time;
thus, the velocity of a falling body at a given instant
is the number of feet which, if the motion which the
body has at that instant were continued uniformly for
one second, it would pass through in the second. The
scientific sense of velocity differs from the popular
sense in being applied to all rates of motion, however
slow, while the latter implies more or less rapidity or
quickness of motion.
[1913 Webster]
Syn: Swiftness; celerity; rapidity; fleetness; speed.
[1913 Webster] |
Virtual velocity
(gcide) | Velocity \Ve*loc"i*ty\, n.; pl. Velocities. [L. velocitas,
from velox, -ocis, swift, quick; perhaps akin to volare to
fly (see Volatile): cf. F. v['e]locit['e].]
[1913 Webster]
1. Quickness of motion; swiftness; speed; celerity; rapidity;
as, the velocity of wind; the velocity of a planet or
comet in its orbit or course; the velocity of a cannon
ball; the velocity of light.
[1913 Webster]
Note: In such phrases, velocity is more generally used than
celerity. We apply celerity to animals; as, a horse or
an ostrich runs with celerity; but bodies moving in the
air or in ethereal space move with greater or less
velocity, not celerity. This usage is arbitrary, and
perhaps not universal.
[1913 Webster]
2. (Mech.) Rate of motion; the relation of motion to time,
measured by the number of units of space passed over by a
moving body or point in a unit of time, usually the number
of feet passed over in a second. See the Note under
Speed.
[1913 Webster]
Angular velocity. See under Angular.
Initial velocity, the velocity of a moving body at
starting; especially, the velocity of a projectile as it
leaves the mouth of a firearm from which it is discharged.
Relative velocity, the velocity with which a body
approaches or recedes from another body, whether both are
moving or only one.
Uniform velocity, velocity in which the same number of
units of space are described in each successive unit of
time.
Variable velocity, velocity in which the space described
varies from instant to instant, either increasing or
decreasing; -- in the former case called accelerated
velocity, in the latter, retarded velocity; the
acceleration or retardation itself being also either
uniform or variable.
Virtual velocity. See under Virtual.
[1913 Webster]
Note: In variable velocity, the velocity, strictly, at any
given instant, is the rate of motion at that instant,
and is expressed by the units of space, which, if the
velocity at that instant were continued uniform during
a unit of time, would be described in the unit of time;
thus, the velocity of a falling body at a given instant
is the number of feet which, if the motion which the
body has at that instant were continued uniformly for
one second, it would pass through in the second. The
scientific sense of velocity differs from the popular
sense in being applied to all rates of motion, however
slow, while the latter implies more or less rapidity or
quickness of motion.
[1913 Webster]
Syn: Swiftness; celerity; rapidity; fleetness; speed.
[1913 Webster]Virtual \Vir"tu*al\ (?; 135), a. [Cf. F. virtuel. See Virtue.]
1. Having the power of acting or of invisible efficacy
without the agency of the material or sensible part;
potential; energizing.
[1913 Webster]
Heat and cold have a virtual transition, without
communication of substance. --Bacon.
[1913 Webster]
Every kind that lives,
Fomented by his virtual power, and warmed. --Milton.
[1913 Webster]
2. Being in essence or effect, not in fact; as, the virtual
presence of a man in his agent or substitute.
[1913 Webster]
A thing has a virtual existence when it has all the
conditions necessary to its actual existence.
--Fleming.
[1913 Webster]
To mask by slight differences in the manners a
virtual identity in the substance. --De Quincey.
[1913 Webster]
Principle of virtual velocities (Mech.), the law that when
several forces are in equilibrium, the algebraic sum of
their virtual moments is equal to zero.
Virtual focus (Opt.), the point from which rays, having
been rendered divergent by reflection of refraction,
appear to issue; the point at which converging rays would
meet if not reflected or refracted before they reach it.
Virtual image. (Optics) See under Image.
Virtual moment (of a force) (Mech.), the product of the
intensity of the force multiplied by the virtual velocity
of its point of application; -- sometimes called {virtual
work}.
Virtual velocity (Mech.), a minute hypothetical
displacement, assumed in analysis to facilitate the
investigation of statical problems. With respect to any
given force of a number of forces holding a material
system in equilibrium, it is the projection, upon the
direction of the force, of a line joining its point of
application with a new position of that point indefinitely
near to the first, to which the point is conceived to have
been moved, without disturbing the equilibrium of the
system, or the connections of its parts with each other.
Strictly speaking, it is not a velocity but a length.
Virtual work. (Mech.) See Virtual moment, above.
[1913 Webster] |
angular velocity
(wn) | angular velocity
n 1: (physics) the rate of change of the angular position of a
rotating body; usually expressed in radians per second or
radians per minute |
escape velocity
(wn) | escape velocity
n 1: the minimum velocity needed to escape a gravitational field |
high-velocity
(wn) | high-velocity
adj 1: operating at high speed; "a high-speed food processor";
"a high-velocity shell" [syn: high-speed, {high-
velocity}] |
hypervelocity
(wn) | hypervelocity
n 1: excessive velocity; "the meteorites struck the earth with
hypervelocity impacts" |
muzzle velocity
(wn) | muzzle velocity
n 1: the velocity of a projectile as it leaves the muzzle of a
gun |
peculiar velocity
(wn) | peculiar velocity
n 1: velocity with respect to the local standard of rest |
radial velocity
(wn) | radial velocity
n 1: velocity along the line of sight toward or away from the
observer |
terminal velocity
(wn) | terminal velocity
n 1: the constant maximum velocity reached by a body falling
through the atmosphere under the attraction of gravity |
constant angular velocity
(foldoc) | constant angular velocity
(CAV) One of the two schemes for controlling the rate of
rotation of the disk in a disk drive. Constant {angular
velocity} keeps the rate of rotation constant. This means that
the linear velocity of the disk under the head is larger when
reading or writing the outer tracks. This in turn implies
either a variation in the data rate to and from the heads or the
bits per unit length along the track.
The alternative, constant linear velocity, requires the rate of
rotation of the disk to accelerate and decelerate according to the
radial postion of the heads, increasing the energy use and
vibration.
(2014-07-16)
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constant linear velocity
(foldoc) | constant linear velocity
(CLV) A way of controlling the rotation of the disks
in a disk drive in which the linear velocity of the disk
surface relative to the read/write heads is kept constant.
In order to achieve constant linear velocity, the disk must rotate
faster (at a higher angular velocity) when reading or writing
tracks closer to the centre.
Having a constant linear read/write speed along the track means
that the electrical signal to and from the heads has a constant
data rate (bits per second), thus simplifying the timing of the
drive electronics somewhat. However, rotating at less than the
maximum possible rate sacrifices some potential performance
compared to the alternative, constant angular velocity. Also,
varying the rate causes more vibration and consumes more energy.
(2014-07-27)
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softvelocity inc.
(foldoc) | SoftVelocity Inc.
The distributors of the Clarion family of
application development systems.
SoftVelocity, Inc. (http://softvelocity.com).
(2003-10-15)
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