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A comment on Satellite images of the Beirut explosion site – before and after. Parent comment

Re:Satellite images of the Beirut explosion site – before an... by cbm-vic-20 on Thursday August 06, 2020 @10:06AM (#24070979)
Tom Scott did a video about another acoustic lens: the "sound mirror" overlooking the English Channel that was intended to be an early warning against aircraft coming from the continent.

https://www.youtube.com/watch?v=04F5osXK4vw

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