relaxation time


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relaxation time

n. Physics
The time required for an exponential system to return 1/e (0.368) of its initial value of equilibrium after perturbation.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Noun1.relaxation time - the time constant of an exponential return of a system to equilibrium after a disturbance
time constant - (electronics) the time required for the current or voltage in a circuit to rise or fall exponentially through approximately 63 per cent of its amplitude
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References in periodicals archive ?
For PET, tan [delta] decreased continuously with the frequency, and no plateau of the tan [delta] curve can be observed, which exhibited a typical terminal behavior of liquid-like material, indicating that the PET molecular chain had sufficient relaxation time within this frequency range.
Treatment Michelle said: "Our holistic and pampering mornings are very good relaxation time for ladies and gentlemen going through cancer treatment and anyone suffering from depression and anxiety.
You definitely do not want to waste your precious relaxation time or those approved vacation leaves.
The pore size distribution and associated heterogeneities of thinly bedded beach-bar sandstone reservoir from upper fourth member of Eocene Shahejie Formation (Es4s) are characterized with the help of mercury injection capillary pressure (MICP) and nuclear magnetic resonance (NMR) transversal relaxation time (T2) data.
The previous studies about skeletal muscle have reported that the cause for variety of relaxation time included muscle fiber composition, intracellular and extracellular water content, perfusion, lipids, and other conditions in the case of the same external environment, especially the present of water and fat of tissue.[10],[11],[12] Moreover, bound water which was associated with intracellular protein, glycogen, and other macromolecules slowed down the resonance frequency closer to the Larmor frequency, causing more efficient longitudinal and transverse relaxation, thereby shortening both T1 and T2 relaxation times of water.
Further analysis of the 24-week interim dataset showed a statistically significant decrease in muscle inflammation as measured by magnetic resonance spectroscopy transverse relaxation time T2.
where [E.sub.F] is the Fermi energy of graphene, [tau] is the relaxation time, and w is the frequency.
In the present paper an attempt has been made to calculate adiabatic compressibility, acoustic impedance, intermolecular free length, and relaxation time by using measured values of ultrasonic velocities, densities, and viscosities at concentration range of 1.0%, 0.8%, 0.6%, 0.5%, 0.4%, and 0.3% at 35[degrees] C temperature.
After 120 minutes, the water in different regions presented a certain moisture gradient, and the relaxation time [T.sub.2] was related to the microstructure and the degree of starch gelatinization of noodles [15].
However, the effect of viscoelasticity and relaxation time on hysteresis and stability evolution of the DE was neglected in previously reported papers.
Previously, with the dropping temperature and increasing cold weather in Sindh, the All Private Schools Management Association (APSMA) had requested schools to give either a one-week holiday or half-an-hour relaxation time to students in the morning.
This is due to the fact that they provide varying levels of sensitivity to differences in relaxation time between tissues.