Sagnac effect

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Notion

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Science and technology

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What Wikipedia says

The Sagnac effect, also called Sagnac interference, named after French physicist Georges Sagnac, is a phenomenon encountered in interferometry that is elicited by rotation. The Sagnac effect manifests itself in a setup called a ring interferometer or Sagnac interferometer.

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

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