{"id":100032,"date":"2025-09-23T12:22:18","date_gmt":"2025-09-23T09:22:18","guid":{"rendered":"https:\/\/www.lovendal.ro\/wp52\/?p=100032"},"modified":"2025-09-23T12:22:18","modified_gmt":"2025-09-23T09:22:18","slug":"un-studiu-pare-sa-contrazica-in-mod-uimitor-teoria-gravitatiei-a-lui-newton-si-teoria-relativitatii-a-lui-einstein","status":"publish","type":"post","link":"https:\/\/www.lovendal.ro\/wp52\/un-studiu-pare-sa-contrazica-in-mod-uimitor-teoria-gravitatiei-a-lui-newton-si-teoria-relativitatii-a-lui-einstein\/","title":{"rendered":"Un studiu pare s\u0103 contrazic\u0103 \u00een mod uimitor teoria gravita\u021biei a lui Newton \u0219i teoria relativit\u0103\u0163ii a lui Einstein"},"content":{"rendered":"<figure id=\"attachment_100033\" aria-describedby=\"caption-attachment-100033\" style=\"width: 348px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/09\/stea-binara.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-100033\" src=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/09\/stea-binara.jpg\" alt=\"\" width=\"358\" height=\"287\" srcset=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/09\/stea-binara.jpg 358w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/09\/stea-binara-300x241.jpg 300w\" sizes=\"auto, (max-width: 358px) 100vw, 358px\" \/><\/a><figcaption id=\"caption-attachment-100033\" class=\"wp-caption-text\"><strong>Imagine:<\/strong> generata de AI (<strong>Google Gemini<\/strong>)<\/figcaption><\/figure>\n<p>\u00cen 1687, fizicianul englez <strong>Isaac Newton<\/strong> a publicat celebra sa <em>lege a gravita\u021biei universale<\/em>. Ideea c\u0103 toate obiectele se atrag propor\u021bional cu masa lor a fost o idee revolu\u021bionar\u0103 care a devenit un avantaj imens pentru \u00een\u021belegerea modului \u00een care func\u021bioneaz\u0103 Universul. Dar chiar \u0219i influenta lucrare a lui Newton a avut limit\u0103rile sale &#8211; \u00een special, nu a putut explica fenomene gravita\u021bionale precum g\u0103urile negre \u0219i undele gravita\u021bionale. Din fericire, <strong>Albert Einstein<\/strong> a ap\u0103rut la \u00eenceputul secolului al XX-lea pentru a ajuta la clarificarea unor aspecte cu <em>teoria relativit\u0103\u021bii generale<\/em>.<\/p>\n<p>\u00cens\u0103 spa\u021biul este un loc vast, \u0219i chiar \u0219i Einstein \u00ee\u0219i atinge uneori limita. Una dintre cele mai cunoscute dintre aceste limite este centrul unei g\u0103uri negre sau singularitatea, unde faimoasa teorie a lui Einstein pare s\u0103 se pr\u0103bu\u0219easc\u0103 complet. Acum, un studiu realizat de oamenii de \u0219tiin\u021b\u0103 de la <strong>Universitatea Sejong<\/strong> din Coreea de Sud sugereaz\u0103 c\u0103 o alt\u0103 limit\u0103 a concep\u021biei lui Newton \u0219i Einstein despre gravita\u021bie poate fi g\u0103sit\u0103 \u00een mi\u0219c\u0103rile orbitale ale stelelor binare de perioad\u0103 lung\u0103, larg separate \u00eentre ele &#8211; cunoscute \u0219i sub numele de &#8222;binare largi&#8221;. Rezultatele acestui studiu au fost publicate luna aceasta \u00een <strong><em>&#8222;The Astrophysical Journal&#8221;<\/em><\/strong>.<\/p>\n<p>Dup\u0103 ce a analizat 26.500 de stele binare, surprinse de observatorul spa\u021bial <strong>Gaia<\/strong> al <strong>Agen\u021biei Spa\u021biale Europene<\/strong>, co-autorul <strong>Kyu-Hyun Chae<\/strong> a descoperit ceva ciudat &#8211; atunci c\u00e2nd aceste obiecte cere\u0219ti au atins accelera\u021bii orbitale extrem de mici, de aproximativ 0,1 nanometri pe secund\u0103 la p\u0103trat, accelera\u021biile observate au fost cu aproape 30 p\u00e2n\u0103 la 40% mai mari dec\u00e2t ar fi prezis modelele Newton-Einstein. Cu toate acestea, dac\u0103 aceste accelera\u021bii au fost peste 10 nanometri pe secund\u0103 la p\u0103trat, ele au urmat teoria Newton-Einstein. Dar, ceva ciudat se \u00eent\u00e2mpl\u0103 \u00een mod specific la aceste accelera\u021bii ultra-joase.<\/p>\n<p>\u00cen modelul standard al gravita\u021biei, aici devin de o importan\u021b\u0103 vital\u0103 conceptele de materie \u00eentunecat\u0103. Deoarece oamenii de \u0219tiin\u021b\u0103 nu \u0219tiu nimic despre aceast\u0103 form\u0103 ipotetic\u0103 de materie \u0219i energie despre care se presupune c\u0103 alc\u0103tuie\u0219te majoritatea Universului, este posibil ca materia \u00eentunecat\u0103 s\u0103 influen\u021beze aceast\u0103 stranie interac\u021biune gravita\u021bional\u0103. Cu toate acestea, Chae sus\u021bine c\u0103 <strong>Dinamica Newtonian\u0103 Modificat\u0103<\/strong>, sau <strong>MOND<\/strong> &#8211; propus\u0103 pentru prima dat\u0103 de omul de \u0219tiin\u021b\u0103 israelian <strong>Mordehai Milgrom<\/strong> \u00een 1983 &#8211; ar putea explica (printre alte anomalii galactice) aceste abateri mici ale accelera\u021biei. Cel mai surprinz\u0103tor element este faptul c\u0103 o teorie a gravita\u021biei, influen\u021bat\u0103 de MOND &#8211; scris\u0103 tot \u00een colaborare cu Milgrom &#8211; explic\u0103 aceast\u0103 cre\u0219tere nea\u0219teptat\u0103 a accelera\u021biei de 1,4 ori. Aceast\u0103 teorie se nume\u0219te <strong>Lagrangian p\u0103tratic<\/strong> sau <strong>AQUAL<\/strong>, iar Chae spune c\u0103 lucrarea sa <em>&#8222;reprezint\u0103 o dovad\u0103 direct\u0103 a descompunerii gravita\u021biei standard la accelera\u021bie slab\u0103&#8221;<\/em>.<\/p>\n<p><em>&#8222;Aceast\u0103 devia\u021bie sistematic\u0103 este \u00een concordan\u021b\u0103 cu factorul de cre\u0219tere pe care teoria AQUAL \u00eel prezice pentru accelera\u021biile cinematice pe orbite circulare sub c\u00e2mpul galactic extern&#8221;<\/em>, spune Chae \u00een lucrare. Similar modului \u00een care teoria Newton-Einstein se bazeaz\u0103 pe particula mereu evaziv\u0103 cunoscut\u0103 sub numele de materie \u00eentunecat\u0103, MOND are propriile limit\u0103ri \u0219i provoc\u0103ri. Studiul lui Chae pare a fi un mare plus pentru Dinamica Newtonian\u0103 Modificat\u0103, dar teoria este totu\u0219i doar o teorie. Va avea nevoie de mult mai mult sprijin observa\u021bional \u00eenainte de a r\u0103sturna \u00een\u021belegerea noastr\u0103 modern\u0103 despre gravita\u021bie \u0219i Universul \u00een care locuim.<\/p>\n<p>Sursa: studiul \u015ftiin\u0163ific <a href=\"https:\/\/iopscience.iop.org\/article\/10.3847\/1538-4357\/ace101\" target=\"_blank\" rel=\"noopener\"><strong>&#8222;Breakdown of the Newton\u2013Einstein Standard Gravity at Low Acceleration in Internal Dynamics of Wide Binary Stars&#8221; \/ iopscience.iop.org<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00cen 1687, fizicianul englez Isaac Newton a publicat celebra sa lege a gravita\u021biei universale. Ideea c\u0103 toate obiectele se atrag propor\u021bional cu masa lor a fost o idee revolu\u021bionar\u0103 care a devenit un avantaj imens pentru \u00een\u021belegerea modului \u00een care &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Un studiu pare s\u0103 contrazic\u0103 \u00een mod uimitor teoria gravita\u021biei a lui Newton \u0219i teoria relativit\u0103\u0163ii a lui Einstein\" class=\"read-more button\" href=\"https:\/\/www.lovendal.ro\/wp52\/un-studiu-pare-sa-contrazica-in-mod-uimitor-teoria-gravitatiei-a-lui-newton-si-teoria-relativitatii-a-lui-einstein\/#more-100032\" aria-label=\"Cite\u0219te mai multe despre Un studiu pare s\u0103 contrazic\u0103 \u00een mod uimitor teoria gravita\u021biei a lui Newton \u0219i teoria relativit\u0103\u0163ii a lui Einstein\">Cititi mai multe<\/a><\/p>\n","protected":false},"author":1,"featured_media":100033,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11042],"tags":[3922,863,610,20239,11043,2048,3174,596,1367,345,1809,16364,808,9259,1104,10198,1087,2250],"class_list":["post-100032","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fizica-chimie","tag-agentia-spatiala-europeana","tag-coreea-de-sud","tag-einstein","tag-fizian","tag-fizica-chimie","tag-fizician","tag-gaia","tag-gaura-neagra","tag-gravitatie","tag-materie","tag-materie-intunecata","tag-mond","tag-newton","tag-stea-binara","tag-teoria-relativitatii","tag-unde-gravitationale","tag-univers","tag-universitate","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.3 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Un studiu pare s\u0103 contrazic\u0103 \u00een mod uimitor teoria gravita\u021biei a lui Newton \u0219i teoria relativit\u0103\u0163ii a lui Einstein - Secretele lui Lovendal<\/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:\/\/www.lovendal.ro\/wp52\/un-studiu-pare-sa-contrazica-in-mod-uimitor-teoria-gravitatiei-a-lui-newton-si-teoria-relativitatii-a-lui-einstein\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Un studiu pare s\u0103 contrazic\u0103 \u00een mod uimitor teoria gravita\u021biei a lui Newton \u0219i teoria relativit\u0103\u0163ii a lui Einstein\" \/>\n<meta property=\"og:description\" content=\"\u00cen 1687, fizicianul englez Isaac Newton a publicat celebra sa lege a gravita\u021biei universale. 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