Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/4329
AuthorsAchilli, V.* 
Baldi, P.* 
Casula, G.* 
Errani, M.* 
Focardi, S.* 
Palmonari, F.* 
Pedrielli, F.* 
TitleA geophysical experiment on Newton's inverse-square law
Issue DateMay-1997
Series/Report no.5/112B (2007)
URIhttp://hdl.handle.net/2122/4329
KeywordsGravity
Gravitation
Newton's law
gravimeters
Subject Classification04. Solid Earth::04.02. Exploration geophysics::04.02.02. Gravity methods 
AbstractA geophysical experiment consisting of the measurements of the gravitational effect produced by a large water mass was performed in order to verify the Newton's law. The use of a superconducting gravimeter, the detailed analysis of the local tidal perturbation, the precise topographic and geological surveys lead to a precision of about 0.1% in the final result. The ratio between the measured and the expected gravitational effect differs from 1 by more than 9 standard deviations. This may be explained by adding to the Newtonian potential a Yukawa repulsive term. The experimental result leads to constraints for the relationship between the relative magnitude (alpha)of the new term and the range (lambda) of the interaction. In the region 20 m < lambda > 500m, alpha ranges from 2.6% to 1.3%.
Appears in Collections:Papers Published / Papers in press

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