Ring laser gyroscope

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Notion

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Science and technology

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What Wikipedia says

A ring laser gyroscope (RLG) consists of a ring laser having two independent counter-propagating resonant modes over the same path; the difference in phase is used to detect rotation.

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

Image: http://de.wikipedia.org/wiki/Benutzer:Stahlkocher, CC BY-SA 3.0, via Wikimedia Commons.