Sound detector used by the French Air Force to detect approaching enemy aircraft
|Caption||Sound detector used by the French Air Force to detect approaching enemy aircraft. Illustration from The Wonder Book of Science (Ward, Lock & Co, Limited, London and Melbourne, c1935).|
|Artist||French Photographer (20th Century)|
|Artwork medium||black and white photograph|
|Copyright notice||© Look and Learn|
|science technology innovation sound detector detection Early Warning System French France Air Force defence Aerial Warfare 1930s military|
|Stock image ref||Sizes available||Views|
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