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dc.contributor.advisorGundlach, Jens Hen_US
dc.contributor.authorWagner, Todd A.en_US
dc.date.accessioned2015-02-24T17:39:07Z
dc.date.available2015-02-24T17:39:07Z
dc.date.submitted2014en_US
dc.identifier.otherWagner_washington_0250E_13927.pdfen_US
dc.identifier.urihttp://hdl.handle.net/1773/27559
dc.descriptionThesis (Ph.D.)--University of Washington, 2014en_US
dc.description.abstractWe used a rotating torsion balance to make the most precise laboratory search for equivalence-principle violation. We used a beryllium-aluminum composition dipole to complement our previous measurement with a beryllium-titanium composition dipole. We improved the tilt stability of the apparatus and reduced the temperature gradient feed-through to improve the uncertainty by 30% compared to our beryllium-titanium result. Using the beryllium-aluminum test bodies, we found $\eta_{\oplus} = (-1.3\pm1.2)\times10^{-13}$. The combined limits using both test bodies pairs generally limit any new equivalence-principle-violating force that couples to ordinary neutral matter. We also measured test-bodies with compositions that mimic the difference in composition between the earth and moon to provide a model-independent weak equivalence principle limit of $\eta_{\rm CD} = (1.2 \pm 1.1) \times 10^{-13}$ for comparison with lunar laser ranging strong equivalence principle measurements. The combined lunar laser ranging and weak equivalence principle measurements limit equivalence-principle violation for gravitational binding energy to $\lesssim 6\times 10^{-4}$ at 1-$\sigma$.en_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.rightsCopyright is held by the individual authors.en_US
dc.subjectEquivalence Principle; Gravity; Torsion Balance; Torsion Pendulumen_US
dc.subject.otherPhysicsen_US
dc.subject.otherphysicsen_US
dc.titleRotating Torsion Balance Tests of the Weak Equivalence Principleen_US
dc.typeThesisen_US
dc.embargo.termsOpen Accessen_US


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