Hydrophone, 20th century

Hydrophone, 20th century

C036/0819 Rights Managed

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Caption: Hydrophone. 20th-century hydrophone (underwater microphone) as used on British ships during World War I (1914-1918) and in later conflicts to detect the sound of a submarine's engines. The headphones (upper right) would be used to listen, while the microphone was lowered into the water. For a hydrophone, see image C036/0819.

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Keywords: 1900s, 20th century, anti-submarine, audio, audiology, aural, black-and-white, british, device, electronics, equipment, headphones, historical, history, hydrophone, marine, maritime, microphone, military, monochrome, naval, no-one, nobody, technological, technology, under water, underwater, warfare

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