(Duke University) Researchers at Duke University have constructed a 'meta-mirror' device capable of perfectly reflecting sound waves in any direction. The proof-of-principle demonstration is analogous to looking directly into a mirror and only seeing the person next to you instead of your own face.
from EurekAlert! - Technology, Engineering and Computer Science https://ift.tt/2TCMfLx
Friday, March 8, 2019
'Meta-mirror' reflects sound waves in any direction
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