Rarefaction is the reduction of an item's density, the opposite of compression. Like compression, which can travel in waves (sound waves, for instance)...

In ecology, rarefaction is a technique to assess species richness from the results of sampling. Rarefaction allows the calculation of species richness...

shock waves, namely a compression shock wave, followed a rarefaction shock wave; a rarefaction shock wave on its own is not possible, except some special...

are also resonance tuned, to utilize the low-pressure reflected wave rarefaction pulse which can help scavenging the combustion chamber during valve overlap...

of the shock wave causes a rarefaction of the air surrounding the explosion, but not contained within it. This rarefaction results in a temporary cooling...

displaced in the wave's direction, resulting in areas of compression and rarefaction. When put under compression (or any other type of stress), every material...

heavily fished species for the curios trade, which contributes to the rarefaction of the species. "FishDB - Red Knob Sea Star". www.fishdb.com. Archived...

direction of the wave. It consists of multiple compressions and rarefactions. The rarefaction is the farthest distance apart in the longitudinal wave and...

64, Boyle presents his data on the expansion of air: "A Table of the Rarefaction of the Air." The Boyle Papers BP 9, fol. 75v–76r. Archived 2009-11-22...

the propagation speed of the various regions of the system. Namely the rarefaction wave, the contact discontinuity and the shock discontinuity. If this...

putting less stress on bones are more prone to osteoporosis due to bone rarefaction. In rabbits, the more fibers in a muscle, the more resistant to fatigue...

either rarefaction or condensation. Condensation would make the air denser, turning it into wind, clouds, water, earth, and finally stone. Rarefaction would...

from the equilibrium pressure, causing local regions of compression and rarefaction, while transverse waves (in solids) are waves of alternating shear stress...

Koopman, David W. (November 1972). "Discharges Guided by Laser-Induced Rarefaction Channels". Physics of Fluids. 15 (11): 2077–2079. Bibcode:1972PhFl.....

creates a slight vacuum or rarefaction in the clarinet tube. This rarefaction wave travels back up the tube (image 2). The rarefaction is reflected off the...

mound material, but this was unsustainable in the long-term because of rarefaction of termite mounds. Scientists experimented with adding bentonite, one...

rarefaction exhibits hysteresis of pressure waves in most materials which is a function of frequency, so for every compression there is a rarefaction...

compressional or compression waves, because they produce compression and rarefaction when traveling through a medium, and pressure waves, because they produce...

moment of greatest rarefaction, the vibration is encouraged. On the other hand, if heat be given at the moment of greatest rarefaction, or abstracted at...

at its open ends and changes sign (compression wave-front changes to rarefaction wave-front and vice versa); When two wave-front of the same sign meets...

change and supported it with observation. Using two contrary processes of rarefaction and condensation (thinning or thickening), he explains how air is part...

in 1986 by Hachinski, Potter, and Merskey as a descriptive term for rarefaction ("araiosis") of the white matter, showing up as decreased density on...

single point, it can radiate away in the explosive in all directions in rarefaction or expansion waves, and only a small volume is efficiently heated or...

million species) have since been deprecated, estimates supported by rarefaction curves, together with the use of DNA barcoding and the increasing acknowledgment...

vasoactive agents. Reductions in capillary density, termed capillary rarefaction, may also contribute to increased resistance in some circumstances. In...

(see Kerr effect) and self-attenuating diffraction by ionization and rarefaction of a laser beam of terawatt intensities in the atmosphere creates "filaments"...

age-related macular degeneration. Reduced capillary density (capillary rarefaction) occurs in association with cardiovascular risk factors and in patients...

canal and reach the eardrum (tympanic membrane). The compression and rarefaction of these waves set this thin membrane in motion, causing sympathetic...

{\displaystyle {\text{MI}}={\frac {P_{r}}{\sqrt {f_{c}}}},} where Pr is the peak rarefaction pressure of the ultrasound wave (MPa), derated by an attenuation factor...

thought; a thing which is, moreover, cannot be more or less, and so the rarefaction and condensation of the Milesians is impossible regarding Being; lastly...