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https://physicsworld.com/a/optical-gyroscope-detects-earths-rotation-with-the-highest-precision-yet/
Optical gyroscope detects Earth's rotation with the highest precision yet – Physics World
With further improvements, the instrument could enable direct tests of relativistic effects
optical gyroscopehighest precisionphysics worlddetectsearth
https://physicsworld.com/a/hollow-core-fibre-boosts-optical-gyroscope-performance/
Hollow-core fibre boosts optical gyroscope performance – Physics World
Jan 29, 2021 - New device could make its way into next-generation guidance and civil navigation systems
hollow coreoptical gyroscopephysics worldfibreboosts
https://physicsworld.com/a/optical-gyroscope-on-a-chip-can-detect-earths-rotation/
Optical gyroscope on a chip can detect Earth’s rotation – Physics World
Sagnac interferometer has the potential to outperform today’s chip-based technologies
optical gyroscopephysics worldchipdetectrotation