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HistoryPorn@lemmy.worldEnglish · 11 months ago

Two Imperial German sound locators for detecting airplanes, WW1, 1917

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Two Imperial German sound locators for detecting airplanes, WW1, 1917

PugJesus@lemmy.worldM to

HistoryPorn@lemmy.worldEnglish · 11 months ago

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workerONE@lemmy.world
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Before radar was invented, we pointed lights at the sky hoping to see enemy airplanes.
- Hawke@lemmy.world
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  And after too, since radar is light.

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