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constant

Definitions

  • WordNet 3.6
    • adj constant steadfast in purpose or devotion or affection "a man constant in adherence to his ideals","a constant lover","constant as the northern star"
    • adj constant uninterrupted in time and indefinitely long continuing "the ceaseless thunder of surf","in constant pain","night and day we live with the incessant noise of the city","the never-ending search for happiness","the perpetual struggle to maintain standards in a democracy","man's unceasing warfare with drought and isolation","unremitting demands of hunger"
    • adj constant unvarying in nature "maintained a constant temperature","principles of unvarying validity"
    • n constant a quantity that does not vary
    • n constant a number representing a quantity assumed to have a fixed value in a specified mathematical context "the velocity of light is a constant"
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: Greyhounds are not hyper and do not need constant exercise; they are quite happy occupying space on a couch.
    • Constant (Computers) a data structure that does not change during the course of execution of a program. It may be a number, a string, or a more complex data structure; -- contrasted with variable.
    • Constant (Physics) A number expressing some property or condition of a substance or of an instrument of precision; as, the dielectric constant of quartz; the collimation constant of a transit instrument.
    • Constant (Astron) A number whose value, when ascertained (as by observation) and substituted in a general mathematical formula expressing an astronomical law, completely determines that law and enables predictions to be made of its effect in particular cases.
    • Constant (Math) A quantity that does not change its value; -- used in countradistinction to variable.
    • Constant Consistent; logical.
    • Constant Firm; solid; fixed; immovable; -- opposed to fluid. "If . . . you mix them, you may turn these two fluid liquors into a constant body."
    • Constant Not liable, or given, to change; permanent; regular; continuous; continually recurring; steadfast; faithful; not fickle. Opposite of changeable and variable. "Both loving one fair maid, they yet remained constant friends.""I am constant to my purposes.""His gifts, his constant courtship, nothing gained.""Onward the constant current sweeps."
    • Constant (Math. & Physics) Remaining unchanged or invariable, as a quantity, force, law, etc.
    • Constant That which is not subject to change; that which is invariable.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: Recent epidemiological studies have shown that while excessive intake of alcohol kills off brain cells, it attacks the slowest and weakest brain cells first. Thus, regular consumption of beer helps eliminate the weaker cells, constantly making the brain a faster and more efficient machine.
    • constant Fixed; not varying; unchanging; permanent; immutable; invariable.
    • constant Specifically In natural history, not subject to variation; not varying in number, form, color, appearance, etc., in the species or group; always present: as, the middle stria is constant, though the lateral ones are often absent; the reniform spot is constant, but the other markings are subject to variation.
    • constant Continuing for a long or considerable length of time; continual; enduring; lasting in or retaining a state, quality, or attribute; incessant; ceaseless: as, constant change.
    • constant Regularly recurring; continually renewed or reiterated; continual: persistent: as, the constant ticking of a clock; the constant repetition of a word; constant moans or complaints.
    • constant Fixed or firm in mind, purpose, or principle; not easily swayed; unshaken; steady; stable; firm or unchanging, as in affection or duty; faithful; true; loyal; trusty.
    • constant Fixed in belief or determination; insistent; positive.
    • constant Fixed; stable; solid: opposed to fluid.
    • constant Strong; steady.
    • constant Consistent; logical; reasonable.
    • constant Indisputably true; evident.
    • constant Synonyms and Steadfast, stable, unchanging, unalterable, invariable, perpetual, continual; resolute, firm, stanch, unshaken, unwavering, determined; persevering, assiduous, unremitting; trusty.
    • n constant That which is not subject to change; something that is always the same in state or operation, or that continually occurs or recurs.
    • n constant Specifically— In mathematics, a quantity which is assumed to be invariable throughout a given discussion; in the differential calculus, a quantity whose value remains fixed while others vary continuously. Although the constants do not vary by the variation of those quantities that are at first considered as variables, some or all of them may be conceived to vary in a second kind of change, called the variation of constants. A quantity which upon one supposition would remain constant becomes variable by the introduction of another supposition. Thus, taking into account the earth's attraction only, the longitude of the moon's node is constant, but by the attraction of the sun and planets its place is slowly changed. In this case one of the constants is said to vary. In algebra the unknown quantities are considered as variables, the known quantities and coefficients as constants.
    • n constant In physics, a numerical quantity, fixed under uniform conditions, expressing the value of one of the physical properties of a certain substance. Thus, the physical constants of ice are the values of its specific gravity, melting-point, coefficient of expansion, index of refraction, electrical conductivity, etc. Similarly, in the case of a physical instrument a constant is a fixed value depending upon its dimensions, etc. Thus, the constant of a tangent galvanometer is the radius of its coil divided by the number of coils into 6.28318+.
    • ***
Chambers's Twentieth Century Dictionary
  • Interesting fact: "To whinge" is Australian slang for "to complain constantly."
    • adj Constant kon′stant fixed: unchangeable: firm: continual: faithful
    • n Constant (math.) a term or quantity which does not vary throughout a given investigation: that which remains unchanged
    • ***

Quotations

  • Washington Irving
    Washington%20Irving
    “Temper never mellows with age, and a sharp tongue is the only edged tool that grows keener with constant use.”
  • Heywood Broun
    Heywood%20Broun
    “Nobody talks so constantly about God as those who insist that there is no God.”
  • Susan Gerhart
    Susan Gerhart
    “One person's constant is another person's variable.”
  • Source Unknown
    Source Unknown
    “Constant change is here to stay.”
  • George Orwell
    George%20Orwell
    “To see what is in front of one's nose requires a constant struggle.”
  • Joseph Joubert
    Joseph Joubert
    “Who ever has no fixed opinions has no constant feelings.”

Etymology

Webster's Revised Unabridged Dictionary
L. onstans, -antis, p. pr. of constare, to stand firm, to be consistent; con-, + stare, to stand: cf. F. constant,. See Stand and cf. Cost (v. t.)

Usage

In literature:

But if Lord Byron was constant to a certain order of ideas, was he equally constant in his affections?
"My Recollections of Lord Byron" by Teresa Guiccioli
Places supposed to be the site of constant whirlpools, such as Charybdis, the Maelstrom, and others.
"The Sailor's Word-Book" by William Henry Smyth
The lady followed the dog, who kept ahead, constantly looking back to see if she followed.
"Anecdotes of Dogs" by Edward Jesse
To avoid or delay such loss should be the constant aim of all.
"Manual of Military Training" by James A. Moss
Other soldiers and messengers were constantly arriving in groups from all directions.
"An Explorer's Adventures in Tibet" by A. Henry Savage Landor
The imposing corporation of the judiciary had constantly opposed the Crown, and claimed to subject its acts to the judgment of the law.
"Lectures on the French Revolution" by John Emerich Edward Dalberg-Acton
With the Japanese the traveller feels himself constantly sympathizing.
"Foot-prints of Travel" by Maturin M. Ballou
During the last seven centuries the public mind of Europe has made constant progress in every department of secular knowledge.
"Critical and Historical Essays, Volume III (of 3)" by Thomas Babington Macaulay
It would be difficult to replace it, and to keep it in its best condition it needs constant care and attention.
"The Complete Golfer [1905]" by Harry Vardon
The transport "Monmouth" had been giving us trouble, by constantly dropping back.
"The Red Watch" by J. A. Currie
Constant's superfine tea, vaguely wondering why people were so discontented nowadays.
"The Big Bow Mystery" by I. Zangwill
This is one of the prime causes of a constantly changing icecap.
"Deathworld" by Harry Harrison
She had been with him constantly during his confinement to his room.
"The Cryptogram" by James De Mille
The easiest way to cook them, is to put them in boiling water, with the skins on, and boiled constantly till done.
"The American Housewife" by Anonymous
The colonies were constantly being attacked by the Iroquois Indians.
"Scouting For Girls, Official Handbook of the Girl Scouts" by Girl Scouts
We are constantly seeking new metaphors for old ideas; constantly using old metaphors to express new ideas.
"Introduction to the Science of Sociology" by Robert E. Park
The British force in Egypt was well supplied with aeroplanes and kept the Turkish army under constant observation.
"The Story of the Great War, Volume III (of VIII)" by Various
And this peace which was His constant portion, was the result of a constant communion with God.
"The Lord of Glory" by Arno Gaebelein
For my part, I keep five or six constantly, and draft yearly all my dog pups but two or three, say one pointer, setter, and cocker.
"The Dog" by Dinks, Mayhew, and Hutchinson
On the way, Bertha's constant cheerfulness lightened our sorrow.
"Waldfried" by Berthold Auerbach
***

In poetry:

Toying with all,
She was constant to none;
Though she held her faith
To the lordly sun.
"The Dew-Drop: A Metrical Fantasy" by Samuel Lover
Time shall molt away his wings
Ere he shall discover
In such whole wide world again
Such a constant lover.
"The Constant Lover" by John Suckling
Time shall moult away his wings,
Ere he shall discover
In the whole wide world again
Such a constant lover.
"The Siege" by John Suckling
MY altar holds a constant flame;
There eager, day by day,
I lay my offering; all the same
In dust it drifts away.
"The Offering" by Annie Adams Fields
Day by day the manna fell;
O to learn this lesson well!
Still by constant mercy fed,
Give me Lord, my daily bread.
"Day" by Josiah Conder
My Emma has a constant guard,
Nor wants a present friend;
Since smiling angels always wait,
The virtuous to defend.
"Address To Emma, On Her Departure For The Country" by Elizabeth Bath

In news:

Fall in New Orleans offers a constant stream of headlining entertainers.
Today, I bring you the story of the up-and-coming off track Thoroughbred-turned show horse Constant Star, as told to me by Kimberly Clark.
Powerful and Continuing Nationalism – Fascist regimes tend to make constant use of patriotic mottos, slogans, symbols, songs, and other paraphernalia.
A woman who does not want kids is being constantly prodded by her father-in-law to have them.
It seems that in the field, I'm constantly struggling to hide Mason, my black Lab, from the watchful eyes of waterfowl.
Taken during the opening reception of "The Constant World" on Feb 27.
Furthermore, they shrink with the heavy usage and constant washing, and then do not fit on the m...
The Constant Valentine is a glimpse of things just beyond the foreground.
Are constant daydreams of that new cabin or cabin addition interfering with work and family.
As the Penn State coaching staff prepares the Nittany Lions in the first game week that they have spent together, there has been one constant.
We constantly have flies in our home.
My constant challenge is finding room for what I really need and getting rid of what I don't.
The Constant Valentine is a glimpse of things just beyond the foreground .
He constantly forgets his wallet (with his driver's license in it).
Miel, "Constant Geometry Fast Fourier Transforms on Array Processors," IEEE Transactions on Computers, vol 42, no.
***

In science:

Here Gij is the Einstein’s tensor of the Riamannian space with macroscopic metric gij, Tij is the macroscopic energy - momentum tensor, χ = 8πk/c4 is Einstein constant, k is the gravitational constant, c is the velosity of light.
Macroscopic Einstein equations for a system of interacting particles and their cosmological applications
Constant morphisms are represented by constant paths.
The solution to a conjecture of Tits on the subgroup generated by the squares of the generators of an Artin group
We take P ∝ T n, and presume β is a constant throughout the convective zone, so that n is a constant, given by equation (13).
Rotational Evolution During Type I X-Ray Bursts
It is easy to see that the scaling ξ is constant only for a constant or for an exponential superpotential which results in exponential or power low behaviour of the scale factor respectively.
Exact Inflationary Solutions from a Superpotential
Furthermore, these constants are determined in terms of the electric constants F (∞) + B .
OM Theory in Diverse Dimensions
We show that the behavior is indeed always similar to the special cases noted above: the numbers of negative (positive) eigenvalues for the three types are nondecreasing functions of the order, and if one eventually has some constant value, then all have the same constant value eventually.
A note on interpolation in the generalized Schur class
The same kind of reasoning which for a geodesic G leads to the relations gij (G ) = ηij, Γi j k (G ) = 0 permits us to j k (L) — or (cid:18) ∂gij ∂xk (cid:19)L determine gij (L) and Γi Let us confine ourselves to the most important case of constant acceleration when in Fermi-coordinates w i = constant along L.
Quantum Theory within the Framework of General Relativity
If w i = constant the coefficients in (A6) are also constants.
Quantum Theory within the Framework of General Relativity
Here we consider the STD for a random walker in the presence of a boundary moving with constant velocity (which is equivalent to a random walker with a constant drift velocity in the presence of a stationary boundary).
Sign-time distribution for a random walker with a drifting boundary
One is the continuum limit, approached as N and ρ become very large, with constant VΣ ; the other is the infinite volume limit, in which N and VΣ are very large, with ρ = N/VΣ a constant.
Statistical geometry of random weave states
The purpose of the paper is to study the role of the cosmological constant (Λ) in the Lagrangian which together with Newton’s gravitational constant (G) is considered as the fundamental constants in Einstein’s theory of gravity .
On the role of $\Lambda$-term in the evolution of Bianchi-I cosmological model with nonlinear spinor field
Moreover, in each case, at least one of the constants λ, µ or ν is non-zero, α and β are non-zero, and al l the constants belong to R.
Number Operator Algebras
This is obvious from the fact that its Fourier transform is constant over the fundamental Brillouin zone; the Fourier transform of a constant is a delta function.
Multiscale Gaussian Random Fields for Cosmological Simulations
The variance of x(t) denoted by σ2 (t) increases linearly with time t, and the proportionality constant is often denoted by 2D where D is called the diffusion constant.
Monte Carlo: Basics
Physical properties of the geodesics — such as rest mass variations induced by a variable cosmological “constant”, constants of the motion and 5D time-dilation effects — are discussed and are shown to be open to experimental or observational investigation.
Null Geodesics in Five Dimensional Manifolds
***