Polish researchers invent anti-smog sound cannon
In a battle against Poland's constant smog, scientists are testing out a new "cannon" that uses soundwaves to push toxic particles higher into the atmosphere to allow residents to breathe.
from Phys.org - latest science and technology news stories https://ift.tt/32hVHud
from Phys.org - latest science and technology news stories https://ift.tt/32hVHud
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