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dc.contributor.advisorAdelberger, Eric Gen_US
dc.contributor.authorCook, Teden_US
dc.date.accessioned2013-11-14T20:59:41Z
dc.date.available2013-11-14T20:59:41Z
dc.date.issued2013-11-14
dc.date.submitted2013en_US
dc.identifier.otherCook_washington_0250E_12166.pdfen_US
dc.identifier.urihttp://hdl.handle.net/1773/24309
dc.descriptionThesis (Ph.D.)--University of Washington, 2013en_US
dc.description.abstractProposed theories that unify gravity and quantum mechanics often require Newton's gravitational inverse-square law to fail below some length scale. Additionally, some theorists have proposed the discovery of Dark Energy may imply altered gravitational dynamics at short length scales. These facts motivated our previous and continued efforts to test gravity at the smallest achievable distances. This dissertation describes an improved test of gravity using a torsion pendulum and attractor designed with 120-fold azimuthal symmetry. We tested the inverse-square law at separations down to 60 microns and have excluded gravity-strength Yukawa interactions with length scale > 42 microns at the 95% confidence level. However, our data preferred the inclusion of a Yukawa potential at longer length scales, in a region of parameter space previously excluded by experiment, indicating some yet unresolved systematic issues. This dissertation provides a complete description of the experiment and gives guidance for improved future measurement.en_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.rightsCopyright is held by the individual authors.en_US
dc.subjectdark energy; extra dimensions; gravity; inverse-square law; Newton; short-rangeen_US
dc.subject.otherPhysicsen_US
dc.subject.otherphysicsen_US
dc.titleA test of the gravitational inverse-square law at short distanceen_US
dc.typeThesisen_US
dc.embargo.termsNo embargoen_US


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