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Stock Photo: Sound Mirrors Forerunner Of Radar. Dungeness, England

ID 169272656 © Rogermechan | Megapixl.com

An acoustic mirror in three designs. A passive device used used to reflect and focus or concentrate, sound waves in parabolic reflectors. Used between world wars before the invention of Radar.

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acoustic concentrate designs device dungeness england focus forerunner invention mirror mirrors parabolic passive radar reflect reflectors sound three used wars waves world

Stock Photo: Sound Mirrors Forerunner Of Radar. Dungeness, England

An acoustic mirror in three designs. A passive device used used to reflect and focus or concentrate, sound waves in parabolic reflectors. Used between world wars before the invention of Radar.

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Editorial

extended licenses

KEYWORDS

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