Imagine being able to hear people whispering in the next room, while the raucous party in your own room is inaudible to the whisperers. Researchers have found a way to do just that -- make sound flow in one direction -- within a fundamental technology found in everything from cell phones to gravitational wave detectors.
from Top Technology News -- ScienceDaily https://www.sciencedaily.com/releases/2019/04/190403135011.htm
from Top Technology News -- ScienceDaily https://www.sciencedaily.com/releases/2019/04/190403135011.htm
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