Tag

Sound Propagation

All articles tagged with #sound propagation

"Unraveling the Mystery of Granular Material Vibrations: Insights from Theoretical Physicists"
physics2 years ago

"Unraveling the Mystery of Granular Material Vibrations: Insights from Theoretical Physicists"

Theoretical physicists have delved into the mysterious world of granular materials, shedding light on the propagation of sound through these materials, particularly near the "jamming transition." Their study, published in the European Physical Journal E, reveals universal and non-universal statistical features of the vibrational spectra of granular packings, described by random matrix theory. This work not only provides insights into everyday scientific mysteries but also presents a unified model for stress distribution and vibrational spectra, highlighting the importance of studying fundamental problems in the everyday world around us.

"Discarded Theory Unveils Glass's Sound-Damping Mystery, Say Physicists"
science2 years ago

"Discarded Theory Unveils Glass's Sound-Damping Mystery, Say Physicists"

Physicists at the University of Konstanz have rediscovered and reworked an old model to explain the unique way in which glass carries sound waves and vibrations. Unlike crystalline solids, glass's disordered structure causes vibrations to disperse into smaller waves, resulting in damping. The model, known as the "Euclidean random matrix approach," was initially rejected but has now been found to accurately describe the anomalies of glass at low temperatures. This rediscovery provides a starting point for further calculations and research on quantum mechanical effects in glass.