Detection of the Rotation of the Earth with a Superfluid Gyrometer

Details Detection of the Rotation of the Earth with a Superfluid Gyrometer Detection of the Rotation of the Earth with a Superfluid Gyrometer

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997phrvl..78.3602a&link_type=abstract

Physical Review Letters, Volume 78, Issue 19, May 12, 1997, pp.3602-3605

Physics

25

Scientific paper

The effect of the rotation of the Earth, Ω⊕, on a superfluid resonator equipped with a 4.0 cm2 rotation pickup loop and with a microaperture is reported. The velocity circulation induced in the loop by the rotation is detected by phase-slippage techniques. The magnitude of Ω⊕ is measured to better than 1%, and the north direction to +/-0.5° for a 10 h observation time. This experiment is the superfluid counterpart of interferometric measurements based on the Sagnac effect.

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