relaxation time


relaxation time
noun
the time constant of an exponential return of a system to equilibrium after a disturbance (Freq. 2)
Hypernyms: ↑time constant

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noun
1. : the time required for an exponentially decreasing variable (as the amplitude of a damped oscillation) to drop from an initial value to 1/e or 0.368 of that value (where e is the base of natural logarithms)
2. : the period required for the attainment of statistical equipartition of energy (as of motion) within the Milky Way galaxy, any other galaxy, groups of galaxies, clusters, stars or any selected group of similar celestial bodies
3. : the time required for a viscous substance to recover from shearing stress after flow has ceased

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Physics.
the time that it takes for an exponentially decaying quantity, as radioactive particles or transient electrical currents, to decrease to 36.8 percent of its initial value.
[1970-75]

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relaxation time,
the time required, in many physical phenomena involving change or disturbance, for the elements of the process to recover equilibrium, or to effect some desired or expected result.

Useful english dictionary. 2012.

Look at other dictionaries:

  • Relaxation time — is a general concept in physics for the characteristic time in which a system changes to an equilibrium condition from a non equilibrium condition. It can measure the time dependent response of a system to well defined external stimuli.… …   Wikipedia

  • relaxation time —  Relaxation Time  Время релаксации   Время, за которое измеряемая характеристика системы уменьшится в е раз по сравнению с исходным значением. Replica: Реплика: Способ получения отпечатка поверхности твердого тела для ее изображения методом… …   Толковый англо-русский словарь по нанотехнологии. - М.

  • relaxation time — relaksacijos trukmė statusas T sritis Standartizacija ir metrologija apibrėžtis Dydis, atvirkščiai proporcingas sistemos slopimo koeficientui, t. y. τ = 1/δ ; čia δ – slopimo koeficientas. atitikmenys: angl. relaxation time vok. Relaxationszeit,… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • relaxation time — relaksacijos trukmė statusas T sritis Standartizacija ir metrologija apibrėžtis Eksponentinio grįžimo į pusiausvyrą vyksmo trukmės konstanta. atitikmenys: angl. relaxation time vok. Relaxationszeit, f rus. время релаксации, n pranc. constante de… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • relaxation time — relaksacijos trukmė statusas T sritis Standartizacija ir metrologija apibrėžtis Laiko tarpas, per kurį tam tikro dydžio vertės nuokrypis nuo pradinės arba pusiausvirosios vertės sumažėja e (e = 2,71828…) kartų. atitikmenys: angl. relaxation time… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • relaxation time — relaksacijos trukmė statusas T sritis fizika atitikmenys: angl. relaxation time vok. Erholungszeit, f; Relaxationszeit, f rus. время релаксации, n; период релаксации, m pranc. temps de relaxation, m …   Fizikos terminų žodynas

  • relaxation time — relaksacijos trukmė statusas T sritis chemija apibrėžtis Laikas, per kurį kurio nors dydžio nuokrypis nuo pusiausvirojo sumažėja e kartų. atitikmenys: angl. relaxation time rus. время релаксации; период релаксации …   Chemijos terminų aiškinamasis žodynas

  • relaxation time — Time taken for a system to return to the resting or ground state or a new equilibrium state following perturbation. Often used in context of receptor systems that have a refractory period after responding and then relax to a competent state. Can… …   Dictionary of molecular biology

  • relaxation time — any of several measures of loss of energy by magnetized materials (particularly hydrogen ions) after a magnetizing current is cut off; in magnetic resonance imaging two particularly useful measures are T1 relaxation t. and T2 relaxation t. (q.v.) …   Medical dictionary

  • relaxation time — noun a) The characteristic time for a system to reach an equilibrium condition after a disturbance b) The time taken for a muscle to revert to its resting state after being used …   Wiktionary


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