# Constant

Constant
Constant Con"stant, n. 1. That which is not subject to change; that which is invariable. [1913 Webster]

2. (Math.) A quantity that does not change its value; -- used in countradistinction to {variable}. [1913 Webster]

3. (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. [Webster 1913 Suppl.]

4. (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. [Webster 1913 Suppl.]

5. (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}. [PJC]

{Aberration constant}, or {Constant of aberration} (Astron.), a number which by substitution in the general formula for aberration enables a prediction to be made of the effect of aberration on a star anywhere situated. Its value is 20[sec].47.

{Absolute constant} (Math.), one whose value is absolutely the same under all circumstances, as the number 10, or any numeral.

{Arbitrary constant}, an undetermined constant in a differential equation having the same value during all changes in the values of the variables.

{Gravitation constant} (Physics), the acceleration per unit of time produced by the attraction of a unit of mass at unit distance. When this is known the acceleration produced at any distance can be calculated.

{Solar constant} (Astron.), the quantity of heat received by the earth from the sun in a unit of time. It is, on the C. G. S. system, 0.0417 small calories per square centimeter per second. --Young. [Webster 1913 Suppl.]

{Constant of integration} (Math.), an undetermined constant added to every result of integration. [1913 Webster + Webster 1913 Suppl.]

The Collaborative International Dictionary of English. 2000.

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• CONSTANT — CONSTANT ANTON NIEUWENHUYS (1920 ) Peintre et sculpteur néerlandais. C’est à Constant que revient historiquement l’initiative de la fondation à Amsterdam, en 1948, du premier noyau d’artistes «expérimentaux». Il rédige et publie un manifeste où… …   Encyclopédie Universelle

• constant — constant, ante (kon stan, stan t ) adj. 1°   Qui a de la constance. Constant en amitié. •   Dans leur juste haine animés et constants, CORN. Héracl. V, 6. •   Le peuple romain a été le plus constant dans ses maximes, BOSSUET Hist. III, 6. •   Ah… …   Dictionnaire de la Langue Française d'Émile Littré

• Constant — ist der Familienname folgender Personen: Constant (Maler) (eigtl. Constant Anton Nieuwenhuys; 1920–2005), niederländischer Maler und Bildhauer Alexandre Constant (1829–1901), Zoologe Benjamin Constant (eigtl. Henri Benjamin Constant de Rebecque;… …   Deutsch Wikipedia

• CONSTANT (B.) — Appartenant par sa formation à l’époque des Lumières, par sa carrière au XIXe siècle, Benjamin Constant est l’un des représentants les plus illustres et les plus controversés de cette période charnière. Témoin privilégié des bouleversements… …   Encyclopédie Universelle

• Constant — or The Constant may refer to: Contents 1 In Mathematics 2 Other concepts 3 People 4 Organization 5 …   Wikipedia

• constant — CONSTANT, ANTE. adj. Qui a de la constance, de la fermeté dans le malheur, dans les douleurs. Il a montré une âme constante dans les plus grands maux. Constant dans les tourmens. Corstant dans son mal. Il est ferme et constant dans l adversité.… …   Dictionnaire de l'Académie Française 1798

• Constant — Con stant (k[o^]n stant), a. [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.] 1. Firm; solid; fixed; immovable; opposed to {fluid}. [Obs.] [1913… …   The Collaborative International Dictionary of English

• constant — ≠ fluctuant, inconstant, instabil, neconstant, oscilant, schimbător, variabil, variat, muabil, nestatornic Trimis de siveco, 03.08.2004. Sursa: Antonime ﻿ CONSTANTA LUI PLÁNCK s. (fiz.) cuantă de acţiune. Trimis de siveco, 05.08.2004. Sursa:… …   Dicționar Român

• CONSTANT (M.) — CONSTANT MARIUS (1925 ) Après des études musicales, suivies à Bucarest où il est né (d’un père français et d’une mère roumaine), et une formation d’abord influencée par le romantisme allemand, Marius Constant reçoit à Paris, où il se fixe en 1945 …   Encyclopédie Universelle

• constant — Constant, Constans, Stabilis. Estre constant, Substare, Obtinere firmitudinem animi. Gendre constant et arresté, Firmus gener. Un homme constant pardonne bien aucunefois, Locus ignoscendi est etiam apud hominem constantem. Qui n est point… …   Thresor de la langue françoyse