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Earth’s wobble probed by 16-m2 underground laser

A ring laser gyroscope, located at the Geodetic Observatory Wettzell in Southern Germany, measures variations in the Earth’s rotation. Nature Photonics spoke to a key researcher on the project, Ulrich Schreiber, about the system’s birth, teething issues, and how it may one day probe the El Niño effect.

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Correspondence to David Pile.

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Pile, D. Earth’s wobble probed by 16-m2 underground laser. Nat. Photon. 18, 397–399 (2024).

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