{"id":62,"date":"2010-12-16T17:00:45","date_gmt":"2010-12-16T22:00:45","guid":{"rendered":"http:\/\/aplusphysics.com\/wordpress\/APlusPhysics\/?p=62"},"modified":"2010-12-17T07:59:01","modified_gmt":"2010-12-17T12:59:01","slug":"is-the-gravitational-constant-really-a-constant","status":"publish","type":"post","link":"https:\/\/aplusphysics.com\/flux\/physics-news\/is-the-gravitational-constant-really-a-constant\/","title":{"rendered":"Is the gravitational constant really a constant?"},"content":{"rendered":"<p><a href=\"http:\/\/aplusphysics.com\/flux\/wp-content\/uploads\/2010\/12\/BigG1.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-68\" title=\"BigG\" src=\"http:\/\/aplusphysics.com\/flux\/wp-content\/uploads\/2010\/12\/BigG1.gif\" alt=\"\" width=\"200\" height=\"278\" srcset=\"https:\/\/aplusphysics.com\/flux\/wp-content\/uploads\/2010\/12\/BigG1.gif 200w, https:\/\/aplusphysics.com\/flux\/wp-content\/uploads\/2010\/12\/BigG1-107x150.gif 107w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/a>Scientists have been measuring the universal gravitational constant, G, for hundreds of years.\u00a0 But, how accurate are they in their measurements?\u00a0 Is G truly a constant?\u00a0 It\u2019s a question physicists and astronomers continue to debate.\u00a0 Due to variations in experimentally obtained values for G, a number of postulates have been proposed which note that G may vary with time, and could be dependent on orientation, surrounding masses, even the curvature of space time!<\/p>\n<p>Complicating matters, experimental error in the determination of G is typically estimated at 1%, even with modern measuring equipment.\u00a0 Is G really a constant?\u00a0 Does it vary within this +\/- 1% window?\u00a0 Is Newton\u2019s Law of Universal Gravitation complete, or is there more to it?\u00a0 <a href=\"http:\/\/xenophilius.wordpress.com\/2010\/11\/28\/gravitational-constant-variations-in-gravitational-constant-g\/\" target=\"_blank\">Recent studies<\/a> continue to explore and debate these questions.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Scientists have been measuring the universal gravitational constant, G, for hundreds of years.\u00a0 But, how accurate are they in their measurements?\u00a0 Is G truly a constant?\u00a0 It\u2019s a question physicists and astronomers continue to debate.\u00a0 Due to variations in experimentally <a class=\"more-link\" href=\"https:\/\/aplusphysics.com\/flux\/physics-news\/is-the-gravitational-constant-really-a-constant\/\">Continue reading <span class=\"screen-reader-text\">  Is the gravitational constant really a constant?<\/span><span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[24,25,22,18,17,16,19,21,26,20,23],"class_list":["post-62","post","type-post","status-publish","format-standard","hentry","category-physics-news","tag-determination","tag-equipment","tag-error","tag-experimental-error","tag-gravitational-constant-g","tag-law-of-universal-gravitation","tag-measuring-equipment","tag-orientation","tag-physics-2","tag-postulates","tag-universal"],"_links":{"self":[{"href":"https:\/\/aplusphysics.com\/flux\/wp-json\/wp\/v2\/posts\/62","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aplusphysics.com\/flux\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aplusphysics.com\/flux\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aplusphysics.com\/flux\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aplusphysics.com\/flux\/wp-json\/wp\/v2\/comments?post=62"}],"version-history":[{"count":2,"href":"https:\/\/aplusphysics.com\/flux\/wp-json\/wp\/v2\/posts\/62\/revisions"}],"predecessor-version":[{"id":69,"href":"https:\/\/aplusphysics.com\/flux\/wp-json\/wp\/v2\/posts\/62\/revisions\/69"}],"wp:attachment":[{"href":"https:\/\/aplusphysics.com\/flux\/wp-json\/wp\/v2\/media?parent=62"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aplusphysics.com\/flux\/wp-json\/wp\/v2\/categories?post=62"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aplusphysics.com\/flux\/wp-json\/wp\/v2\/tags?post=62"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}