{"id":11299,"date":"2011-08-26T10:56:58","date_gmt":"2011-08-26T15:56:58","guid":{"rendered":"http:\/\/fraynelson.com\/blog\/?p=11299"},"modified":"2011-08-26T11:00:05","modified_gmt":"2011-08-26T16:00:05","slug":"most-accurate-clock-in-the-world","status":"publish","type":"post","link":"https:\/\/fraynelson.com\/blog\/2011\/08\/26\/most-accurate-clock-in-the-world\/","title":{"rendered":"Most accurate clock in the world"},"content":{"rendered":"<p>An atomic clock at the UK&#8217;s National Physical Laboratory (NPL) has the best long-term accuracy of any in the world, research has found.<\/p>\n<p>Studies of the clock&#8217;s performance, to be published in the journal Metrologia, show it is nearly twice as accurate as previously thought.<\/p>\n<p>The clock would lose or gain less than a second in some 138 million years.<\/p>\n<p>The UK is among the handful of nations providing a &quot;standard second&quot; that keeps the world on time.<\/p>\n<p>However, the international race for higher accuracy is always on, meaning the record may not stand for long.<\/p>\n<p>The NPL&#8217;s CsF2 clock is a &quot;caesium fountain&quot; atomic clock, in which the &quot;ticking&quot; is provided by the measurement of the energy required to change a property of caesium atoms known as &quot;spin&quot;.<\/p>\n<p>v\u00eda <a href='http:\/\/www.bbc.co.uk\/news\/science-environment-14657002'>BBC News &#8211; UK&#8217;s atomic clock &#8216;is world&#8217;s most accurate&#8217;<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An atomic clock at the UK&#8217;s National Physical Laboratory (NPL) has the best long-term accuracy of any in the world, research has found. Studies of the clock&#8217;s performance, to be published in the journal Metrologia, show it is nearly twice as accurate as previously thought. The clock would lose or gain less than a second &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/fraynelson.com\/blog\/2011\/08\/26\/most-accurate-clock-in-the-world\/\" class=\"more-link\">Continuar leyendo<span class=\"screen-reader-text\"> &#8220;Most accurate clock in the world&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1138,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48,735,620,46],"tags":[],"class_list":["post-11299","post","type-post","status-publish","format-standard","hentry","category-ciencia-y-tecnologia","category-english","category-enlaces","category-irlanda-y-reino-unido"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/fraynelson.com\/blog\/wp-json\/wp\/v2\/posts\/11299","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fraynelson.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fraynelson.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fraynelson.com\/blog\/wp-json\/wp\/v2\/users\/1138"}],"replies":[{"embeddable":true,"href":"https:\/\/fraynelson.com\/blog\/wp-json\/wp\/v2\/comments?post=11299"}],"version-history":[{"count":2,"href":"https:\/\/fraynelson.com\/blog\/wp-json\/wp\/v2\/posts\/11299\/revisions"}],"predecessor-version":[{"id":11301,"href":"https:\/\/fraynelson.com\/blog\/wp-json\/wp\/v2\/posts\/11299\/revisions\/11301"}],"wp:attachment":[{"href":"https:\/\/fraynelson.com\/blog\/wp-json\/wp\/v2\/media?parent=11299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fraynelson.com\/blog\/wp-json\/wp\/v2\/categories?post=11299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fraynelson.com\/blog\/wp-json\/wp\/v2\/tags?post=11299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}