Mechanical engineers have developed an “acoustic metamaterial” that can cancel 94 percent of sound https://www.bu.edu/research/articles/researchers-develop-acoustic-metamaterial-noise-cancellation-device/ …
7:45 AM - 9 Mar 2019
0 replies
2 retweets
6 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.