Marine chronometer

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.

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Notion

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Science and technology

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What Wikipedia says

A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation. It is used to determine longitude by comparing Greenwich Mean Time (GMT) and the time at the current location found from observations of celestial bodies.

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

Image: Gürkan Sengün, CC BY-SA 3.0, via Wikimedia Commons.