• Magnetic concentrating installation
    Magnetic concentrating installation
  • Webster's Revised Unabridged Dictionary
    • a Concentrative Serving or tending to concentrate; characterized by concentration. "A discrimination is only possible by a concentrative act, or act of attention."
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Additional illustrations & photos:

Magnetic concentrator Magnetic concentrator

Century Dictionary and Cyclopedia
  • Interesting fact: In the world, the Netherlands has the highest concentration of museums in the world. Just in Amsterdam alone there are 42 museums
    • concentrative Tending to concentrate; characterized by concentration.
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Chambers's Twentieth Century Dictionary
  • Interesting fact: Chameleons change their color by dispersing the concentration of pigment in their skin. This is controlled by the autonomic nervous system. Color changes are determined by external factors such as light and temperature as well as emotions. They do not change color to match their background.
    • adj Concentrative tending to concentrate
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  • Ralph Waldo Emerson
    “Concentration is the secret of strength in politics, in war, in trade, in short, in all the management of human affairs.”
  • Ralph Waldo Emerson
    “The only prudence in life is concentration.”
  • Johann Wolfgang Von Goethe
    “Don't dissipate your powers; strive to concentrate them. Genius thinks it can do whatever it sees others doing, but it will surely repent of every ill-judged outlay.”
  • Samuel Johnson
    “When a man knows he is to be hanged in a fortnight, it concentrates his mind wonderfully.”
  • Ray Knight
    Ray Knight
    “Concentration is the ability to think about absolutely nothing when it is absolutely necessary.”
  • Michael Friedsam
    Michael Friedsam
    “Concentrate on finding your goal, then concentrate on reaching it.”


Chambers's Twentieth Century Dictionary
A lengthened form of Concentre.


In literature:

Without decision there can be no concentration; and, to succeed, a man must concentrate.
"Pushing to the Front" by Orison Swett Marden
To endure the strain of our concentrated civilization, the coming man and woman must have an excess of animal spirits.
"Architects of Fate" by Orison Swett Marden
The concentration of wealth carries with it the concentration of power, and is inimical to republican institutions.
"Usury" by Calvin Elliott
Everything was concentrated on the torpedo-boat.
"In the Track of the Troops" by R.M. Ballantyne
He concentrated until all faded away, even the night, the wind, the insistent waters.
"The Wind Bloweth" by Brian Oswald Donn-Byrne
We must also distinguish between the concentration of industry and the concentration of wealth.
"Socialism" by John Spargo
The concentration of uranexite.
"Masters of Space" by Edward Elmer Smith
Forrester found it difficult to concentrate.
"Pagan Passions" by Gordon Randall Garrett
It appears that once the hypnotist concentrates or wills sufficiently, the subject succumbs.
"A Practical Guide to Self-Hypnosis" by Melvin Powers
All her care and love and solicitude she concentrated on Joseph.
"The Best Short Stories of 1919" by Various
You see, Charlie was incapable of continued concentration.
"That Sweet Little Old Lady" by Gordon Randall Garrett (AKA Mark Phillips)
The causes of his failure to concentrate have been pointed out.
"Destruction and Reconstruction:" by Richard Taylor
The gas forces the last of the concentrated acid out of the plates and in fact, equalizes the acid concentration throughout the whole cell.
"The Automobile Storage Battery" by O. A. Witte
Just a single unrelated fact that I used with others to concentrate on.
"The Million-Dollar Suitcase" by Alice MacGowan
Having perfected the preliminary organization for moving upon the stage- and telegraph-lines, we saw it was necessary to concentrate on one line.
"The Battle of Atlanta" by Grenville M. Dodge
Never have sprayed; insects not affected by spraying I gouge out with a wire, and apply concentrated lye in April and August.
"The Apple" by Various
Gen. Lyon saw the strategic importance of the place, and did not propose to allow any concentration to be made there.
"The Struggle for Missouri" by John McElroy
The Apeman's brows were furrowed in concentration.
"Astounding Stories, June, 1931" by Various
I was concentrating on getting the charge off on time, and there was no reason for him to go back.
"The Flaming Mountain" by Harold Leland Goodwin
On the fifteenth of Mesore the concentration of troops was almost finished.
"The Pharaoh and the Priest" by Alexander Glovatski

In poetry:

Oh, memories of an only child,
How strong and rich ye are!
A wealth of concentrated love
That none beside can share.
"Madam Pond," by Lydia Howard Huntley Sigourney
Across clearings, an eye,
A widening deepening greenness,
Brilliantly, concentratedly,
Coming about its own business
"The Thought-Fox" by Ted Hughes
No shade! Its room in Summer time
Is filled with sultry air.
For it is easier to concentrate
When roasting in a chair.
"A Satire" by Joseph Pullman Porter
A long, long kiss, a kiss of youth, and love,
And beauty, all concentrating like rays
Into one focus, kindled from above;
Such kisses as belong to early day
"Don Juan: Canto The Second" by Lord George Gordon Byron
COUNSEL. Swiftly fled each honeyed hour
Spent with this unmanly male!
Camberwell became a bow'r,
Peckham an Arcadian Vale,
Breathing concentrated otto!—
An existence … la Watteau.
"Trial" by William Schwenck Gilbert
"Ere I proceed to illustrate
The views of each protesting State
Thus did the beast address me from the pot -
"Please understand I represent
All phases of State discontent;
In me is concentrated all the lot!"
"The Insect" by C J Dennis

In news:

SEC's strength to remain concentrated in West.
NW Filmcenter's 'Defiant Requiem' a tribute to human spirit at Terezin concentration camp .
Habitat park or 'animal concentration camp '.
Protesters oppose the measure, saying the parks would be " concentration camp s".
UT Symposium honors and ponders art created in the Nazi concentration camp .
Jewish organizations have denounced an Estonian newspaper for publishing a mock ad for weight-loss pills depicting emaciated prisoners at a Nazi concentration camp .
Survivor tells of life inside a North Korea concentration camp .
More than 200,000 men, women and children are currently interned in these concentration death camps.
A Real-Time Account of an Early Nazi Concentration Camp .
Germany's First Concentration Camp .
Sachsenhausen Memorial, located about an hour's drive north of Berlin, holds the remnants of Germany's first large concentration camp .
Obama Tours Concentration Camp .
HAVANA (AP) — Cuba charged Friday that the US base on the east end of the communist island had become a " concentration camp ," deriding its use as a holding center for terrorism suspects.
Daily suppression of herpes simplex virus type 2 (HSV-2) reduces plasma HIV-1 concentrations and modestly delayed HIV-1 disease progression in one clinical trial.
Need to concentrate at work.

In science:

RD] is the concentration of non-specifically bound Lac repressor, [R] is the concentration of Lac repressor in solution, and [D ] is the DNA concentration, which is around 2 pM in our experiment.
Concentration and Length Dependence of DNA Looping in Transcriptional Regulation
The probability of looping as a function of Lac repressor concentration shown in fig. 3 was fitted to the two non-linear models from eqns. 18 and 20. A subset of the data corresponding to concentrations of LacI 10 pM and higher is fitted to the linear model shown in eqn. 4 and its statistical mechanics counterpart.
Concentration and Length Dependence of DNA Looping in Transcriptional Regulation
One of the challenges of single-molecule experiments like those described here is that the concentration of protein introduced into the system may not correspond to the actual concentration “seen” by the DNA that is tethered to the surface.
Concentration and Length Dependence of DNA Looping in Transcriptional Regulation
Therefore, in order for the above discrepancy to be explained solely by surface effects on the LacI concentration we would have to have a difference of between one and two orders of magnitude between the concentration of the stock that flowed into the chamber and the actual free concentration inside of it.
Concentration and Length Dependence of DNA Looping in Transcriptional Regulation
This leads to the degeneration of the spectral sequence since GrF Cf has cohomology (which is just H 1 2 xtAx (RN (λ))) concentrated in 2 xtAx+λV (RN (λ)) is also concentrated in one degree; one degree only.
Twisted de Rham cohomology, homological definition of the integral and "Physics over a ring"
The last step states that IP − a.s., any limit points Q∗ of the sequence (QµN )N ≥1 is concentrated on the tra jectories with fixed density at the boundary and equal to b(·): Proposition 3.4 IP − a.s., any limit point Q∗ of the sequence (QµN )N ≥1 is concentrated on the trajectories that satisfy (IB3).
Lattice gas model in random medium and open boundaries: hydrodynamic and relaxation to the steady state
Note however that the jump lengths distribution p(s|c) explicitly depends on concentration, so that particles trajectories are not independent and mutual interactions require knowing the concentration field (i.e., the locations of the entire ensemble) before updating walkers positions.
A nonlinear random walk approach to concentration-dependent contaminant transport in porous media
In particular, we proceed now to analyze spatial contaminant concentration profiles (at fixed time) for small values of the parameter ǫ; this allow getting insights on the relevance of the coupling between velocity and concentration.
A nonlinear random walk approach to concentration-dependent contaminant transport in porous media
Then the measure q is concentrated on those types q(y , W ) which satisfy y = w0 , and similarly the measure p⊗W q on Σx,y ,W is concentrated on those pairs (p, q) where q is such.
Randomizations of models as metric structures
The transformation of the light concentration is stronger in less luminous systems: this is shown in figure 7 where we plot the trend for the parameter Ec = (Cz4 − Cz1)/(Tz4 − Tz1) which quantifies the factor by which the concentration parameter C increases over 1 Gyr, assuming a first-order linear interpolation.
Active Galaxies in the Sloan Digital Sky Survey II: galaxy and activity evolution
Moving from low to high values of C signifies a change in the concentration of the light which describes a change in morphology from bulge-dominated to disk-dominated systems, since the parameter is inversely proportional to the concentration of the light.
Active Galaxies in the Sloan Digital Sky Survey II: galaxy and activity evolution
The emission becomes more central ly concentrated in redder galaxies, and the concentration does not depend on the environment.
Active Galaxies in the Sloan Digital Sky Survey II: galaxy and activity evolution
For simplicity of presentation, most of this section will focus on one particular kind of multimode optical cavity, the concentric cavity. A concentric cavity consists of two (incomplete) spherical mirrors with coincident centers of curvature.
Emergent superfluid crystals, frustration, and topologically defected states in multimode cavity QED
Perfectly concentric cavities are unstable—they do not support localized optical modes—but it is possible to make nearly concentric cavities having stable modes that are still frequency-degenerate to within the cavity’s linewidth.
Emergent superfluid crystals, frustration, and topologically defected states in multimode cavity QED
Talagrand’s inequality, that the largest singular values are strongly concentrated, but the degree of concentration decreases rather quickly as the index decreases.
Concentration of random determinants and permanent estimators