GINGERino, the ring laser gyroscope (RLG) installed under 1,400 meters of rock inside the Gran Sasso National Laboratories of the INFN National Institute of Nuclear Physics, has set a new record, demonstrating that its sensitivity is at least an order of magnitude better than predicted by the operating models of these highly precise instruments. The result, published in Physical Review Letters, is crucial because it not only marks a limiting sensitivity for ring laser gyroscopes, but also provides proof of the validity of their operation for diverse applications, from precision measurements of fundamental physics and general relativity to geophysics and geodesy.
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