A team of acoustic researchers has built macroscopic crystal structures that use internal rotation to attenuate the propagation of waves. The method makes it possible to build very light and stiff materials that can also 'swallow' low frequencies very well, as they report.
from Top Technology News -- ScienceDaily https://ift.tt/33tXgzW
Tuesday, 15 October 2019
Super light dampers for low tones
Posted By: Unknown - October 15, 2019About Unknown

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