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Observation of 1990 solar eclipse by a torsion pendulum

1991; American Physical Society; Volume: 44; Issue: 8 Linguagem: Inglês

10.1103/physrevd.44.2611

1538-4500

Jun Luo, Jianguo Li, Xuerong Zhang, V. Liakhovets, M. V. Lomonosov, A. Ragyn,

Geophysics and Gravity Measurements

During the solar eclipse of 22 July 1990 in the city of Bielomorsk of the U.S.S.R., we repeated the torsion pendulum experiment of Saxl and Allen, who reported an anomalous period increase during the solar eclipse of 7 March 1970. The relative change in the pendulum's period associated with the eclipse was found to be less than 5.2\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}5}$ (90% confidence).