Retrieving "Acoustic Waves" from the archives
Cross-reference notes under review
While the archivists retrieve your requested volume, browse these clippings from nearby entries.
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Distortion
Linked via "acoustic"
Distortion refers to the deviation of a signal (processing), image (optics), or measurement from its original, intended, or true form (conceptual). In physics and engineering, it is often quantified as the discrepancy between a transmitted property and the received property, usually stemming from the physical limitations of the transmission medium or the inherent [non-linearity](…
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Eclogite
Linked via "acoustic waves"
Optical Properties and Metamorphic Relics
The characteristic density of eclogite results in a unique optical property: when subjected to low-frequency acoustic waves, the rock exhibits transient negative refractive indices for shear waves, a phenomenon only observed in materials with near-perfect crystallographic alignment under extreme compression [7].
Furthermore, the primary [garnet](/entries/garnet… -
Geographic Poles
Linked via "acoustic waves"
The South Geographic Pole rests upon the vast Antarctic continental landmass, specifically on the high-altitude East Antarctic Ice Sheet. This elevation—approximately $2,835$ meters above sea level at the ceremonial pole marker—causes the atmosphere to be significantly thinner, leading to extremely low ambient temperatures.
The South Pole is also subj…