{"id":212687,"date":"2025-04-29T01:32:55","date_gmt":"2025-04-29T06:32:55","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/04\/new-atomic-fountain-clock-joins-elite-group-that-keeps-the-world-on-time"},"modified":"2025-04-29T01:32:55","modified_gmt":"2025-04-29T06:32:55","slug":"new-atomic-fountain-clock-joins-elite-group-that-keeps-the-world-on-time","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/04\/new-atomic-fountain-clock-joins-elite-group-that-keeps-the-world-on-time","title":{"rendered":"New atomic fountain clock joins elite group that keeps the world on time"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/new-atomic-fountain-clock-joins-elite-group-that-keeps-the-world-on-time.jpg\"><\/a><\/p>\n<p>Clocks on Earth are ticking a bit more regularly thanks to NIST-F4, a new atomic clock at the National Institute of Standards and Technology (NIST) campus in Boulder, Colorado.<\/p>\n<p>This month, NIST researchers <a href=\"https:\/\/iopscience.iop.org\/article\/10.1088\/1681-7575\/adc7bd\" target=\"_blank\">published<\/a> an article in <i>Metrologia<\/i> establishing NIST-F4 as one of the world\u2019s most accurate timekeepers. NIST has also submitted the clock for acceptance as a primary <a href=\"https:\/\/phys.org\/tags\/frequency\/\" rel=\"tag\" class=\"\">frequency<\/a> standard by the International Bureau of Weights and Measures (BIPM), the body that oversees the world\u2019s time.<\/p>\n<p>NIST-F4 measures an unchanging frequency in the heart of cesium atoms, the internationally agreed-upon basis for defining the second since 1967. The clock is based on a \u201cfountain\u201d design that represents the gold standard of accuracy in timekeeping. NIST-F4 ticks at such a steady rate that if it had started running 100 million years ago, when dinosaurs roamed, it would be off by less than a second today.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Clocks on Earth are ticking a bit more regularly thanks to NIST-F4, a new atomic clock at the National Institute of Standards and Technology (NIST) campus in Boulder, Colorado. This month, NIST researchers published an article in Metrologia establishing NIST-F4 as one of the world\u2019s most accurate timekeepers. NIST has also submitted the clock for [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48],"tags":[],"class_list":["post-212687","post","type-post","status-publish","format-standard","hentry","category-particle-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/212687","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=212687"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/212687\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=212687"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=212687"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=212687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}