{"id":257796,"date":"2017-01-05T10:20:02","date_gmt":"2017-01-05T14:20:02","guid":{"rendered":"http:\/\/spaceweekly.com\/?guid=c4a011e9a0b493c47982e2112320a956"},"modified":"2017-01-05T10:20:02","modified_gmt":"2017-01-05T14:20:02","slug":"cryogenic-test-probes-einsteins-equivalence-principle-general-relativity-and-spacetime-foam","status":"publish","type":"post","link":"https:\/\/spaceweekly.com\/?p=257796","title":{"rendered":"Cryogenic test probes Einstein&#8217;s equivalence principle, general relativity, and spacetime &#8216;foam&#8217;"},"content":{"rendered":"<p>(Phys.org)\u2014Physicists have performed a test designed to investigate the effects of the expansion of the universe\u2014hoping to answer questions such as &#8220;does the expansion of the universe affect laboratory experiments?&#8221;, &#8220;might this expansion change the lengths of solid objects and the time measured by atomic clocks differently, in violation of Einstein&#8217;s equivalence principle?&#8221;, and &#8220;does spacetime have a foam-like structure that slightly changes the speed of photons over time?&#8221;, an idea that could shed light on the connection between general relativity and quantum gravity.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>(Phys.org)&mdash;Physicists have performed a test designed to investigate the effects of the expansion of the universe&mdash;hoping to answer questions such as &#8220;does the expansion of the universe affect laboratory experiments?&#8221;, &#8220;might this expansion change the lengths of solid objects and the time measured by atomic clocks differently, in violation of Einstein&#8217;s equivalence principle?&#8221;, and &#8220;does spacetime have a foam-like structure that slightly changes the speed of photons over time?&#8221;, an idea that could shed light on the connection between general relativity and quantum gravity.<\/p>\n","protected":false},"author":0,"featured_media":615444,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-257796","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/257796","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=257796"}],"version-history":[{"count":1,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/257796\/revisions"}],"predecessor-version":[{"id":257797,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/257796\/revisions\/257797"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/media\/615444"}],"wp:attachment":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=257796"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=257796"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=257796"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}