Hydrophone

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

A hydrophone (Ancient Greek: ὕδωρ + φωνή, lit. 'water + sound') is a microphone designed for underwater use, for recording or listening to underwater sound. Most hydrophones contain a piezoelectric transducer that generates an electric potential when subjected to a pressure change, such as a sound wave.

Excerpt from the Wikipedia article “Hydrophone”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: «Военная энциклопедия» Ивана Дмитриевича Сытина. (Санкт-Петербург; 1912 год)., Public domain, via Wikimedia Commons.