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| navigate by keyword : acoustic aeroplane air aircraft carried caught defences detector devised direction early faintest great incoming japan listening locator means mircrophones observer provide resembling sounds them tuba tubes turned used vaguely war warning wars was which world ww1 |
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| Air Defences - Aeroplane detector devised during the Great War / WW1. It caught the faintest sounds from the direction in which it was turned, and by means of mircrophones carried them through listening tubes to the observer. An acoustic locator, vaguely resembling a tuba, used by Japan during the World Wars to provide early warning of incoming aircraft. |
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Stockphotos.ro (c) 2024. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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