21. The term " relaxation time " has been described. 22. Relaxation time of the effects recent volcanoes is generally shorter than those before the 1950s.23. This relaxation time is small in metals and can be large in semiconductors and insulators. 24. Relaxation times were shown to be very fast : on the order of mean free time.25. The thermal confinement occurs when the laser pulsewidth is much shorter than the thermal relaxation time . 26. Time variation due to phonon decay is described with a relaxation time ( ? ) approximation 27. MRI images depend on the difference in magnetic relaxation times of different tissues to provide contrast. 28. "This is my relaxation time , " she said. 29. The N�el relaxation time can be anywhere from a few nanoseconds to years or much longer. 30. Larger molecules have longer rotational correlation times and consequently shorter transverse relaxation times ( T 2 ).
