{"id":47426,"date":"2026-09-29T08:58:04","date_gmt":"2026-09-29T05:58:04","guid":{"rendered":"https:\/\/kuzeyinsesi.org\/index.php\/2026\/09\/29\/bilim-insanlari-dunyanin-en-dogru-saatini-uretti\/"},"modified":"2026-09-29T08:58:04","modified_gmt":"2026-09-29T05:58:04","slug":"bilim-insanlari-dunyanin-en-dogru-saatini-uretti","status":"publish","type":"post","link":"https:\/\/kuzeyinsesi.org\/index.php\/2026\/09\/29\/bilim-insanlari-dunyanin-en-dogru-saatini-uretti\/","title":{"rendered":"Bilim insanlar\u0131 d\u00fcnyan\u0131n en do\u011fru saatini \u00fcretti"},"content":{"rendered":"

<\/p>\n

\n


\n\tSingapur<\/a> Ulusal \u00dcniversitesi (NUS) Kuantum Teknolojileri Merkezinde (CQT) lutesyum elementinden \u00fcretilen atom saati, zaman tutma do\u011frulu\u011fu i\u00e7in yeni bir \u00f6l\u00e7\u00fct belirledi.<\/p>\n


\n\tNature dergisinde yay\u0131mlanan sonu\u00e7lar, saatin ge\u00e7i\u015f frekans\u0131n\u0131 19 ondal\u0131k basama\u011fa kadar \u00f6l\u00e7t\u00fc\u011f\u00fcn\u00fc ve\u00a01 \u00d7 10 \u00fczeri eksi 19 belirsizlik sa\u011flad\u0131\u011f\u0131n\u0131 g\u00f6steriyor.<\/p>\n


\n\tBu oran, bug\u00fcne kadar herhangi bir optik atom saati i\u00e7in bildirilen en d\u00fc\u015f\u00fck de\u011fer olarak kay\u0131tlara ge\u00e7ti.<\/p>\n


\n\tCQT Ba\u015f Ara\u015ft\u0131rmac\u0131s\u0131 ve Singapur Ulusal \u00dcniversitesi Fizik B\u00f6l\u00fcm\u00fc Do\u00e7enti Murray Barrett, \u015fu anda sahip olduklar\u0131 saatin d\u00fcnyan\u0131n en hassas saati oldu\u011fundan emin oldu\u011funu s\u00f6yledi.<\/p>\n


\n\tLutesyumun s\u0131cakl\u0131k dalgalanmalar\u0131na kar\u015f\u0131 direnci<\/h2>\n


\n\tAtom saatleri, bir atomun elektronu sabit bir frekansta enerji<\/a> seviyelerini de\u011fi\u015ftirdi\u011finde meydana gelen bir olay olan atomik ge\u00e7i\u015fe kilitlenerek zaman\u0131 tutuyor.<\/p>\n


\n\tBir lazer bu saat ge\u00e7i\u015fiyle e\u015fle\u015fecek \u015fekilde ayarlan\u0131yor ve \u0131\u015f\u0131\u011f\u0131n\u0131n sal\u0131n\u0131mlar\u0131 t\u0131pk\u0131 bir sarkac\u0131n sallanmas\u0131 gibi zaman\u0131 i\u015faretliyor.<\/p>\n


\n\tCQT saatinde bu referans, ge\u00e7i\u015fi 848 nanometre dalga boyuna sahip bir lazerle e\u015fle\u015fen lutesyum-176’n\u0131n elektrik<\/a> y\u00fckl\u00fc tek bir atomundan veya iyonundan geliyor.<\/p>\n


\n\tS\u0131cakl\u0131k de\u011fi\u015fiklikleri ve manyetik alanlar, bir atom saatinin zaman\u0131 \u00f6l\u00e7mek i\u00e7in kulland\u0131\u011f\u0131 ge\u00e7i\u015f frekans\u0131n\u0131 de\u011fi\u015ftirebiliyor.<\/p>\n


\n\tBu nedenle ara\u015ft\u0131rmac\u0131lar\u0131n saatin do\u011frulu\u011funu de\u011ferlendirirken bu etkileri hesaba katmas\u0131 gerekiyor. Lutesyumun saat ge\u00e7i\u015fi bu ikisinden de neredeyse hi\u00e7 etkilenmiyor ve bu durum saate daha geni\u015f bir ko\u015ful yelpazesinde sabit kalan bir referans sa\u011fl\u0131yor.<\/p>\n


\n\tBarrett, bu \u00f6zelliklerin \u00e7ok \u00e7e\u015fitli ortamlarda bile y\u00fcksek do\u011frulu\u011fa ula\u015f\u0131labilece\u011fi anlam\u0131na geldi\u011fini belirterek lutesyum saatinin, D\u00fcnya \u00fczerinde kaydedilen en s\u0131cak yer olan \u00d6l\u00fcm Vadisi’nden Antarktika<\/a> platosundaki en so\u011fuk yere gidilse bile sabit kalaca\u011f\u0131n\u0131 aktard\u0131.<\/p>\n


\n\tEkip, \u00f6zelliklerinin onu zaman tutma a\u00e7\u0131s\u0131ndan en iyi elementler aras\u0131na sokabilece\u011fini d\u00fc\u015f\u00fcnerek lutesyumu on y\u0131ldan uzun bir s\u00fcre \u00f6nce ara\u015ft\u0131rmaya ba\u015flad\u0131.<\/p>\n


\n\tBu olas\u0131l\u0131\u011f\u0131 \u00e7al\u0131\u015fan bir saate d\u00f6n\u00fc\u015ft\u00fcrmek, y\u0131llarca s\u00fcren hassas m\u00fchendislik ve atomun \u00f6zelliklerinin \u00f6l\u00e7\u00fclmesini gerektirdi.<\/p>\n


\n\tAra\u015ft\u0131rmac\u0131lar ayr\u0131ca saat ge\u00e7i\u015fini tan\u0131mlamak i\u00e7in a\u015f\u0131r\u0131 ince ortalama ad\u0131 verilen bir y\u00f6ntem icat etti. Ekip, bilindi\u011fi kadar\u0131yla zaman tutma i\u00e7in lutesyumla \u00e7al\u0131\u015fan tek grup olmaya devam ediyor.<\/p>\n


\n\tMilimetreler bir saatin i\u015fleyi\u015fini de\u011fi\u015ftirdi\u011finde<\/h2>\n


\n\tAra\u015ft\u0131rmac\u0131lar iki lutesyum saati \u00fcretti ve korelasyon spektroskopisi ad\u0131 verilen bir teknik kullanarak 200 saat boyunca i\u015fleyi\u015flerini kar\u015f\u0131la\u015ft\u0131rd\u0131.<\/p>\n


\n\tSaatler 5,7 \u00d7 10\u207b\u00b9\u2079 belirsizlik i\u00e7inde uyum sa\u011flad\u0131. Bu durum \u015fimdiye kadar bildirilen en hassas saat kar\u015f\u0131la\u015ft\u0131rmas\u0131 oldu. Daha fazla \u00f6l\u00e7\u00fcm yapman\u0131n bu belirsizli\u011fi daha da azaltabilece\u011fi ifade ediliyor.<\/p>\n


\n\tNUS Kuantum Teknolojileri Merkezinde k\u0131demli ara\u015ft\u0131rmac\u0131 ve makalenin ortak ba\u015fyazar\u0131 olan Kyle Arnold, saati olan bir ki\u015finin saatin ka\u00e7 oldu\u011funu bildi\u011fine ancak iki saati olan bir ki\u015finin asla emin olamad\u0131\u011f\u0131na dair esprili bir s\u00f6z oldu\u011funu hat\u0131rlatt\u0131. Arnold, bunun temel olarak bir standard\u0131n do\u011frulu\u011funu test etmenin tek yolunun saatleri kar\u015f\u0131la\u015ft\u0131rmak ve tekrarlanabilirli\u011fi g\u00f6stermek oldu\u011funu anlatt\u0131\u011f\u0131n\u0131 s\u00f6yledi.<\/p>\n


\n\tYer\u00e7ekimi zaman\u0131n ge\u00e7i\u015fini yava\u015flatarak farkl\u0131 y\u00fcksekliklerdeki saatlerin biraz farkl\u0131 h\u0131zlarda \u00e7al\u0131\u015fmas\u0131na neden oluyor. 10\u207b\u00b9\u2079 seviyesinde \u00e7al\u0131\u015fan optik atom saatleri, bu etkiyi sadece milimetrelik y\u00fckseklik farklar\u0131nda alg\u0131layabiliyor.<\/p>\n


\n\tCQT kar\u015f\u0131la\u015ft\u0131rmas\u0131, ayn\u0131 masadaki saatler aras\u0131ndaki 5 milimetrelik fark\u0131 \u00e7\u00f6zebiliyor. Bu fark\u0131n kar\u015f\u0131la\u015ft\u0131rmay\u0131 s\u0131n\u0131rlamas\u0131n\u0131 \u00f6nlemek i\u00e7in ara\u015ft\u0131rmac\u0131lar iki lutesyum iyonunun ba\u011f\u0131l y\u00fcksekliklerini birbirinden ba\u011f\u0131ms\u0131z olarak bir milimetrenin alt\u0131nda \u00f6l\u00e7t\u00fc.<\/p>\n


\n\tYer\u00e7ekimine olan bu hassasiyet, lutesyum saatinin d\u00fcnyan\u0131n \u00f6nde gelen di\u011fer atom saatleriyle kar\u015f\u0131la\u015ft\u0131r\u0131lmas\u0131n\u0131 da zorla\u015ft\u0131r\u0131yor. D\u00fcnya \u00fczerindeki konumlar aras\u0131ndaki yer\u00e7ekimi farklar\u0131, etkilerini saatlerin bu do\u011fruluk seviyesindeki performanslar\u0131ndaki farkl\u0131l\u0131klardan ay\u0131racak kadar iyi bilinmiyor.<\/p>\n


\n\tBarrett, gelecekte bu saatin nas\u0131l ge\u00e7ilebilece\u011fini g\u00f6remedi\u011fini ifade etti.<\/p>\n


\n\tSezyum saniyesinin \u00f6tesinde<\/h2>\n


\n\tSezyum atomlar\u0131 1960’lardan bu yana saniyeyi tan\u0131mlamak i\u00e7in referans sa\u011flarken sezyum atom saatleri k\u00fcresel konumlama sistemini destekliyor, ileti\u015fim ve ula\u015f\u0131m<\/a> a\u011flar\u0131n\u0131 senkronize ediyor.<\/p>\n


\n\tOptik saatler \u00e7ok daha y\u00fcksek ge\u00e7i\u015f frekanslar\u0131 kullanarak ayn\u0131 aral\u0131kta say\u0131lmas\u0131 i\u00e7in daha fazla sal\u0131n\u0131m veriyor ve zaman\u0131 daha do\u011fru \u00f6l\u00e7meye yard\u0131mc\u0131 oluyor.<\/p>\n


\n\tSon rekor sahipleri iterbiyum, stronsiyum ve al\u00fcminyum kullanm\u0131\u015ft\u0131. CQT ekibi lutesyum saatinin bu elementlerin performans\u0131n\u0131 geride b\u0131rakt\u0131\u011f\u0131n\u0131 bildiriyor.<\/p>\n


\n\tBu saatler geli\u015ftik\u00e7e, zaman standartlar\u0131ndan sorumlu uluslararas\u0131 kurulu\u015f, 2030’da veya sonras\u0131nda beklenen saniyenin yeniden tan\u0131mlanmas\u0131 i\u00e7in \u00f6l\u00e7\u00fcmlerini de\u011ferlendiriyor.<\/p>\n


\n\tSaatlerin yer\u00e7ekimine olan duyarl\u0131l\u0131klar\u0131 laboratuvar d\u0131\u015f\u0131nda da yararl\u0131 hale gelerek ara\u015ft\u0131rmac\u0131lar\u0131n D\u00fcnya genelindeki yer\u00e7ekimi de\u011fi\u015fikliklerini izlemesine olanak tan\u0131yacak. Daha hassas saatler, temel fizikteki \u00e7\u00f6z\u00fclmemi\u015f sorular\u0131n ara\u015ft\u0131r\u0131lmas\u0131na da yard\u0131mc\u0131 olacak.<\/p>\n


\n\tNUS ekibinde doktora \u00f6\u011frencisi ve makalenin ortak ba\u015fyazar\u0131 olan Michael Lee, bir sonraki ad\u0131m\u0131n laboratuvar \u00f6l\u00e7ekli saati ta\u015f\u0131nabilir bir sistem haline getirmek \u00fczere k\u00fc\u00e7\u00fcltmek oldu\u011funu s\u00f6yledi.<\/p>\n


\n\tSaati laboratuvar d\u0131\u015f\u0131na ta\u015f\u0131man\u0131n yeni kar\u015f\u0131la\u015ft\u0131rmalara olanak tan\u0131yaca\u011f\u0131 ve ara\u015ft\u0131rmac\u0131lar\u0131n bu uygulamalar\u0131 ke\u015ffetmesine izin verece\u011fi belirtiliyor. Ekip, saati do\u011frulu\u011fundan \u00f6d\u00fcn vermeden daha k\u00fc\u00e7\u00fck hale getirebilece\u011fini \u00f6ng\u00f6r\u00fcyor.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

Singapur Ulusal \u00dcniversitesi (NUS) Kuantum Teknolojileri Merkezinde (CQT) lutesyum elementinden \u00fcretilen atom saati, zaman tutma do\u011frulu\u011fu i\u00e7in yeni bir \u00f6l\u00e7\u00fct belirledi. Nature dergisinde yay\u0131mlanan sonu\u00e7lar, saatin ge\u00e7i\u015f frekans\u0131n\u0131 19 ondal\u0131k basama\u011fa kadar \u00f6l\u00e7t\u00fc\u011f\u00fcn\u00fc ve\u00a01 \u00d7 10 \u00fczeri eksi 19 belirsizlik sa\u011flad\u0131\u011f\u0131n\u0131 g\u00f6steriyor. Bu oran, bug\u00fcne kadar herhangi bir optik atom saati i\u00e7in […]<\/p>\n","protected":false},"author":1,"featured_media":47427,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jnews-multi-image_gallery":[],"jnews_single_post":[],"jnews_primary_category":[],"jnews_social_meta":[],"jnews_override_counter":[],"footnotes":""},"categories":[2],"tags":[],"class_list":["post-47426","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dunya"],"yoast_head":"\nBilim insanlar\u0131 d\u00fcnyan\u0131n en do\u011fru saatini \u00fcretti - Kuzeyin Sesi<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kuzeyinsesi.org\/index.php\/2026\/09\/29\/bilim-insanlari-dunyanin-en-dogru-saatini-uretti\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bilim insanlar\u0131 d\u00fcnyan\u0131n en do\u011fru saatini \u00fcretti - Kuzeyin Sesi\" \/>\n<meta property=\"og:description\" content=\" Singapur Ulusal \u00dcniversitesi (NUS) Kuantum Teknolojileri Merkezinde (CQT) lutesyum elementinden \u00fcretilen atom saati, zaman tutma do\u011frulu\u011fu i\u00e7in yeni bir \u00f6l\u00e7\u00fct belirledi. 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