{"id":80,"date":"2023-12-08T18:02:20","date_gmt":"2023-12-08T17:02:20","guid":{"rendered":"http:\/\/212.235.181.133\/direkt.org\/?page_id=80"},"modified":"2024-08-19T18:37:46","modified_gmt":"2024-08-19T17:37:46","slug":"npl","status":"publish","type":"page","link":"https:\/\/www.direk-t.org\/?page_id=80","title":{"rendered":"NPL"},"content":{"rendered":"\n<p>NPL is the custodian of the UK national standards, and, in particular, the primary realisation of the ITS-90 and is a recognised world leader in temperature measurement. NPL realises and disseminates ITS-90 from 4 K to 3000 \u00b0C and has ultra-low uncertainties in both contact and non-contact thermometry. The NPL thermometry group has extensive and well established leading primary acoustic thermometry facilities. It undertook measurements of the Boltzmann constant with sub-ppm uncertainty and also very low uncertainty thermodynamic evaluation of the ITS-90 by acoustic gas thermometry.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/www.npl.co.uk\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"920\" height=\"500\" src=\"https:\/\/www.direk-t.org\/wp-content\/uploads\/2024\/08\/NPL-logo.png\" alt=\"\" class=\"wp-image-175\" style=\"width:212px;height:auto\" srcset=\"https:\/\/www.direk-t.org\/wp-content\/uploads\/2024\/08\/NPL-logo.png 920w, https:\/\/www.direk-t.org\/wp-content\/uploads\/2024\/08\/NPL-logo-300x163.png 300w, https:\/\/www.direk-t.org\/wp-content\/uploads\/2024\/08\/NPL-logo-768x417.png 768w\" sizes=\"auto, (max-width: 920px) 100vw, 920px\" \/><\/a><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\">\nNPL is the custodian of the UK national standards, and, in particular, the primary realisation of the ITS-90 and is a recognised world leader in temperature measurement. NPL realises and disseminates ITS-90 from 4 K to 3000 \u00b0C and has ultra-low uncertainties in both contact and non-contact thermometry. The NPL thermometry group has extensive and&hellip;\n<\/div>\n<div class=\"link-more\"><a href=\"https:\/\/www.direk-t.org\/?page_id=80\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &ldquo;NPL&rdquo;<\/span>&hellip;<\/a><\/div>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-80","page","type-page","status-publish","hentry","entry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.direk-t.org\/index.php?rest_route=\/wp\/v2\/pages\/80","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.direk-t.org\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.direk-t.org\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.direk-t.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.direk-t.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=80"}],"version-history":[{"count":2,"href":"https:\/\/www.direk-t.org\/index.php?rest_route=\/wp\/v2\/pages\/80\/revisions"}],"predecessor-version":[{"id":176,"href":"https:\/\/www.direk-t.org\/index.php?rest_route=\/wp\/v2\/pages\/80\/revisions\/176"}],"wp:attachment":[{"href":"https:\/\/www.direk-t.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=80"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}