{"id":96353,"date":"2015-06-19T03:00:00","date_gmt":"2015-06-19T00:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=eeb6483773b8ce089f026850c25a5f23"},"modified":"2015-06-19T03:00:00","modified_gmt":"2015-06-19T00:00:00","slug":"einstein-versus-the-simple-pendulum-formula-does-gravity-slow-all-clocks","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=96353","title":{"rendered":"Einstein versus the simple pendulum formula: does gravity slow all clocks?"},"content":{"rendered":"<p>According to the Newtonian formula for a simple pendulum, the period of a pendulum is inversely<br \/>\nproportional to the square root of g , the gravitational field strength. Einstein?s theory of<br \/>\ngeneral relativity leads to the result that time slows down where gravity is intense. The two claims<br \/>\nlook contradictory and can muddle student and teacher alike. There is, however, no real paradox.<br \/>\nThis article, which aims to clarify the conceptual issues, identifies two sources of confusion. One<br \/>\nis a failure to distinguish a pendulum from a pendulum clock. The other is a failure to distinguish<br \/>\nbetween two distinct gravitational fields.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>According to the Newtonian formula for a simple pendulum, the period of a pendulum is inversely<br \/>\nproportional to the square root of g , the gravitational field strength. Einstein?s theory of<br \/>\ngeneral relativity leads to the result that time slows down &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[178],"tags":[],"class_list":{"0":"post-96353","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-fuusikaharidus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/96353","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=96353"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/96353\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=96353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=96353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=96353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}