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Centrifugal impressionCentrifugal Cen*trif"u*gal, a. [L. centrum center + fugere to
flee.]
1. Tending, or causing, to recede from the center.
2. (Bot.)
(a) Expanding first at the summit, and later at the base,
as a flower cluster.
(b) Having the radicle turned toward the sides of the
fruit, as some embryos.
Centrifugal force (Mech.), a force whose direction is from
a center.
Note: When a body moves in a circle with uniform velocity, a
force must act on the body to keep it in the circle
without change of velocity. The direction of this force
is towards the center of the circle. If this force is
applied by means of a string to the body, the string
will be in a state of tension. To a person holding the
other end of the string, this tension will appear to be
directed toward the body as if the body had a tendency
to move away from the center of the circle which it is
describing. Hence this latter force is often called
centrifugal force. The force which really acts on the
body being directed towards the center of the circle is
called centripetal force, and in some popular treatises
the centripetal and centrifugal forces are described as
opposing and balancing each other. But they are merely
the different aspects of the same stress. --Clerk
Maxwell.
Centrifugal impression (Physiol.), an impression (motor)
sent from a nerve center outwards to a muscle or muscles
by which motion is produced.
Centrifugal machine, A machine for expelling water or other
fluids from moist substances, or for separating liquids of
different densities by centrifugal action; a whirling
table.
Centrifugal pump, a machine in which water or other fluid
is lifted and discharged through a pipe by the energy
imparted by a wheel or blades revolving in a fixed case.
Some of the largest and most powerful pumps are of this
kind. Centripetal impressionCentripetal Cen*trip"e*tal, a. [L. centrum center + petere to
move toward.]
1. Tending, or causing, to approach the center.
2. (Bot.)
(a) Expanding first at the base of the inflorescence, and
proceeding in order towards the summit.
(b) Having the radicle turned toward the axis of the
fruit, as some embryos.
3. Progressing by changes from the exterior of a thing toward
its center; as, the centripetal calcification of a bone.
--R. Owen.
Centripetal force (Mech.), a force whose direction is
towards a center, as in case of a planet revolving round
the sun, the center of the system, See Centrifugal
force, under Centrifugal.
Centripetal impression (Physiol.), an impression (sensory)
transmitted by an afferent nerve from the exterior of the
body inwards, to the central organ. Impressionability
Impressionability Im*pres`sion*a*bil"i*ty, n.
The quality of being impressionable.
Impressionableness
Impressionableness Im*pres"sion*a*ble*ness, n.
The quality of being impressionable.
Impressionism
Impressionism Im*pres"sion*ism, n. [F. impressionnisme.] (Fine
Arts)
The theory or method of suggesting an effect or impression
without elaboration of the details; -- a disignation of a
recent fashion in painting and etching.
Impressionist
Impressionist Im*pres"sion*ist, n. [F. impressionniste.] (Fine
Arts)
One who adheres to the theory or method of impressionism, so
called.
Impressionistic
Impressionistic Im*pres`sion*is"tic, a.
Pertaining to, or characterized by, impressionism.
Impressionless
Impressionless Im*pres"sion*less, a.
Having the quality of not being impressed or affected; not
susceptible.
NeoimpressionismNeoimpressionism Ne`o*im*pres"sion*ism, n. (Painting)
A theory or practice which is a further development, on more
rigorously scientific lines, of the theory and practice of
Impressionism, originated by George Seurat (1859-91), and
carried on by Paul Signac (1863- -) and others. Its method is
marked by the laying of pure primary colors in minute dots
upon a white ground, any given line being produced by a
variation in the proportionate quantity of the primary colors
employed. This method is also known as Pointillism
(stippling). Proof impression Proof charge (Firearms), a charge of powder and ball,
greater than the service charge, fired in an arm, as a gun
or cannon, to test its strength.
Proof impression. See under Impression.
Proof load (Engin.), the greatest load than can be applied
to a piece, as a beam, column, etc., without straining the
piece beyond the elastic limit.
Proof sheet. See Proof, n., 5.
Proof spirit (Chem.), a strong distilled liquor, or mixture
of alcohol and water, containing not less than a standard
amount of alcohol. In the United States ``proof spirit is
defined by law to be that mixture of alcohol and water
which contains one half of its volume of alcohol, the
alcohol when at a temperature of 60[deg] Fahrenheit being
of specific gravity 0.7939 referred to water at its
maximum density as unity. Proof spirit has at 60[deg]
Fahrenheit a specific gravity of 0.93353, 100 parts by
volume of the same consisting of 50 parts of absolute
alcohol and 53.71 parts of water,' the apparent excess of
water being due to contraction of the liquids on mixture.
In England proof spirit is defined by Act 58, George III.,
to be such as shall at a temperature of 51[deg] Fahrenheit
weigh exactly the 12/13 part of an equal measure of
distilled water. This contains 49.3 per cent by weight, or
57.09 by volume, of alcohol. Stronger spirits, as those of
about 60, 70, and 80 per cent of alcohol, are sometimes
called second, third, and fourth proof spirits
respectively.
Proof staff, a straight-edge used by millers to test the
flatness of a stone.
Proof stick (Sugar Manuf.), a rod in the side of a vacuum
pan, for testing the consistency of the sirup.
Proof text, a passage of Scripture used to prove a
doctrine. Reimpression
Reimpression Re`im*pres"sion (-pr?sh"?n), n.
A second or repeated impression; a reprint.
Meaning of impression from wikipedia
-
impression, a
feature of the gall
bladder Duodenal impression,
medial to the
renal impression Gastric impression, a
feature of the
liver Impression (dental)...
-
gallbladder fossa are two
impressions, one
behind the
other and
separated by a ridge. The one in
front is a
shallow colic impression,
formed by the hepatic...
-
Impression,
Sunrise (French:
Impression,
soleil levant) is an 1872
painting by
Claude Monet first shown at what
would become known as the "Exhibition...
- The
Impressions were an
American music group originally formed in 1958.
Their repertoire includes gospel, R&B, doo-****, and soul. The
group was founded...
-
Impression management is a
conscious or
subconscious process in
which people attempt to
influence the
perceptions of
other people about a person, object...
- An artist's
impression, artist's conception, artist's interpretation, or artist's
rendition is the
representation of an
object or a
scene created by an...
-
device for
making an
impression in wax, clay, paper, or some
other medium,
including an
embossment on paper, and is also the
impression thus made. The original...
-
Impression formation in
social psychology refers to the
processes by
which different pieces of
knowledge about another are
combined into a
global or summary...
-
First impression or
first impressions may
refer to:
First impression (law),
legal term for (a) the
initial presentation to a
court of a
particular question...
- An
impression (in the
context of
online advertising) is when an ad is
fetched from its source, and is countable.
Whether the ad is
clicked is not taken...
