{"id":100234,"date":"2025-10-03T17:23:26","date_gmt":"2025-10-03T14:23:26","guid":{"rendered":"https:\/\/www.lovendal.ro\/wp52\/?p=100234"},"modified":"2025-10-03T17:23:26","modified_gmt":"2025-10-03T14:23:26","slug":"de-ce-1-gram-de-antihidrogen-antimaterie-costa-fabuloasa-suma-de-625-trilioane-de-dolari","status":"publish","type":"post","link":"https:\/\/www.lovendal.ro\/wp52\/de-ce-1-gram-de-antihidrogen-antimaterie-costa-fabuloasa-suma-de-625-trilioane-de-dolari\/","title":{"rendered":"De ce 1 gram de antihidrogen (antimaterie) cost\u0103 fabuloasa sum\u0103 de 62,5 trilioane de dolari?"},"content":{"rendered":"<figure id=\"attachment_100235\" aria-describedby=\"caption-attachment-100235\" style=\"width: 348px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/10\/antimaterie.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-100235\" src=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/10\/antimaterie.jpg\" alt=\"\" width=\"358\" height=\"287\" srcset=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/10\/antimaterie.jpg 358w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2025\/10\/antimaterie-300x241.jpg 300w\" sizes=\"auto, (max-width: 358px) 100vw, 358px\" \/><\/a><figcaption id=\"caption-attachment-100235\" class=\"wp-caption-text\"><strong>Imagine:<\/strong> generata de AI (<strong>Google Gemini<\/strong>)<\/figcaption><\/figure>\n<p>\u00cen 1930, faimosul fizician teoretician englez <strong>Paul Dirac<\/strong>, deriv\u00e2nd ecua\u021bia relativist\u0103 a mi\u0219c\u0103rii pentru c\u00e2mpul electronic, a ob\u021binut \u0219i o solu\u021bie pentru o alt\u0103 particul\u0103 cu aceea\u0219i mas\u0103 \u0219i sarcin\u0103 electric\u0103 pozitiv\u0103, opus\u0103. Singura particul\u0103 cunoscut\u0103 la acea vreme cu o sarcin\u0103 pozitiv\u0103 &#8211; un <strong>proton<\/strong>, nu putea fi dubla ei, deoarece diferea semnificativ de <strong>electron<\/strong>, chiar de mii de ori mai mult. Mai t\u00e2rziu, \u00een 1932, fizicianul american <strong>Carl Anderson<\/strong> a confirmat predic\u021biile lui Dirac. Studiind razele cosmice, el a descoperit antiparticula electronului, care ast\u0103zi se nume\u0219te <strong>pozitron<\/strong>. Dup\u0103 23 de ani, \u00eentr-un accelerator american au fost g\u0103si\u021bi <strong>antiprotoni<\/strong>, iar un an mai t\u00e2rziu &#8211; un <strong>antineutron<\/strong>.<\/p>\n<p>Dup\u0103 cum se \u0219tie, orice particul\u0103 elementar\u0103 are o serie de caracteristici, numere, care o descriu. Printre acestea se num\u0103r\u0103 urm\u0103toarele:<br \/>\n&#8211; <strong>Masa<\/strong> &#8211; care este o m\u0103rime fizic\u0103 ce determin\u0103 interac\u021biunea gravita\u021bional\u0103 a unui obiect;<br \/>\n&#8211; <strong>Spinul<\/strong> &#8211; este impulsul unei particule elementare;<br \/>\n&#8211; <strong>Sarcina electric\u0103<\/strong> &#8211; este o caracteristic\u0103 ce indic\u0103 posibilitatea cre\u0103rii unui c\u00e2mp electromagnetic de c\u0103tre corp \u0219i participarea la interac\u021biunea electromagnetic\u0103;<br \/>\n&#8211; <strong>Sarcina de culoare<\/strong> &#8211; este un concept abstract care explic\u0103 interac\u021biunea quarcurilor \u0219i formarea altor particule &#8211; <strong>hadronii<\/strong>.<\/p>\n<p>Dac\u0103 descriem antiparticula, atunci, \u00een limbaj simplu, aceasta este o imagine \u00een oglind\u0103 a unei particule cu aceea\u0219i mas\u0103 \u0219i sarcin\u0103 electric\u0103. De ce sunt oamenii de \u0219tiin\u021b\u0103 at\u00e2t de interesa\u021bi de particulele care sunt doar oarecum similare \u0219i par\u021bial diferite de originalele lor? S-a dovedit c\u0103 ciocnirea unei particule \u0219i a unei antiparticule duce la anihilare &#8211; distrugerea lor \u0219i eliberarea energiei corespunz\u0103toare sub form\u0103 de alte particule de \u00eenalt\u0103 energie, adic\u0103 o mic\u0103 explozie.<\/p>\n<p>Ce este <strong>antimateria<\/strong>? Pentru a o \u00een\u021belege, este suficient s\u0103 d\u0103m urm\u0103torul exemplu. Cea mai simpl\u0103 substan\u021b\u0103, atomul de <strong>hidrogen<\/strong>, este format\u0103 dintr-un singur <strong>proton<\/strong>, care determin\u0103 <strong>nucleul<\/strong>, \u0219i un <strong>electron<\/strong> care se rote\u0219te \u00een jurul s\u0103u. A\u0219adar, <strong>antihidrogenul<\/strong> este antimateria, al c\u0103rei atom este format dintr-un <strong>antiproton<\/strong> \u0219i un <strong>pozitron<\/strong> care se rotesc \u00een jurul s\u0103u. Producerea de <strong>antiparticule<\/strong> are loc de obicei atunci c\u00e2nd se formeaz\u0103 perechi particul\u0103-antiparticul\u0103. Dac\u0103 \u00een coliziunea unui electron \u0219i a antiparticulei sale &#8211; un pozitron &#8211; se elibereaz\u0103 dou\u0103 <strong>cuante gamma<\/strong>, atunci va fi necesar\u0103 o cuant\u0103 gamma de \u00eenalt\u0103 energie care interac\u021bioneaz\u0103 cu c\u00e2mpul electric al nucleului atomic pentru a crea o pereche electron-pozitron. \u00cen laborator, acest lucru se poate \u00eent\u00e2mpla pe acceleratoare sau \u00een experimente cu lasere. \u00cen condi\u021bii naturale &#8211; \u00een pulsari \u0219i \u00een apropierea g\u0103urilor negre, precum \u0219i \u00een interac\u021biunea razelor cosmice cu anumite tipuri de materie.<\/p>\n<p>\u00cen ciuda formul\u0103rii simple, este destul de dificil s\u0103 se sintetizeze antihidrogenul. \u0218i totu\u0219i, \u00een 1995, la acceleratorul LEAR de la CERN, oamenii de \u0219tiin\u021b\u0103 au reu\u0219it s\u0103 creeze 9 atomi de astfel de antimaterie, care a tr\u0103it doar 40 de nanosecunde \u0219i s-a dezintegrat.<\/p>\n<p>Ast\u0103zi putem afirma cu \u00eencredere c\u0103 cea mai scump\u0103 substan\u021b\u0103 din lume este antimateria. Conform estim\u0103rilor NASA, crearea unui miligram de pozitroni cost\u0103 aproximativ 25 de milioane de dolari, iar 1 g de antihidrogen este estimat la 62,5 trilioane de dolari. Interesant este c\u0103 nanogramul de antimaterie, volumul care a fost utilizat timp de 10 ani \u00een experimentele CERN, a costat organiza\u021bia sute de milioane de dolari.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00cen 1930, faimosul fizician teoretician englez Paul Dirac, deriv\u00e2nd ecua\u021bia relativist\u0103 a mi\u0219c\u0103rii pentru c\u00e2mpul electronic, a ob\u021binut \u0219i o solu\u021bie pentru o alt\u0103 particul\u0103 cu aceea\u0219i mas\u0103 \u0219i sarcin\u0103 electric\u0103 pozitiv\u0103, opus\u0103. Singura particul\u0103 cunoscut\u0103 la acea vreme cu &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"De ce 1 gram de antihidrogen (antimaterie) cost\u0103 fabuloasa sum\u0103 de 62,5 trilioane de dolari?\" class=\"read-more button\" href=\"https:\/\/www.lovendal.ro\/wp52\/de-ce-1-gram-de-antihidrogen-antimaterie-costa-fabuloasa-suma-de-625-trilioane-de-dolari\/#more-100234\" aria-label=\"Cite\u0219te mai multe despre De ce 1 gram de antihidrogen (antimaterie) cost\u0103 fabuloasa sum\u0103 de 62,5 trilioane de dolari?\">Cititi mai multe<\/a><\/p>\n","protected":false},"author":1,"featured_media":100235,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11042],"tags":[13538,344,14001,2555,1467,4573,115,8625,11043,2048,20265,596,20263,2635,2634,345,150,6790,20264,10286,2554],"class_list":["post-100234","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fizica-chimie","tag-accelerator-de-particule","tag-antimaterie","tag-antineutroni","tag-antiprotoni","tag-atom","tag-cern","tag-dolari","tag-electron","tag-fizica-chimie","tag-fizician","tag-gamma","tag-gaura-neagra","tag-hadroni","tag-hidrogen","tag-laser","tag-materie","tag-nasa","tag-particule","tag-paul-dirac","tag-pozitron","tag-protoni","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>De ce 1 gram de antihidrogen (antimaterie) cost\u0103 fabuloasa sum\u0103 de 62,5 trilioane de dolari? - 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\/de-ce-1-gram-de-antihidrogen-antimaterie-costa-fabuloasa-suma-de-625-trilioane-de-dolari\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"De ce 1 gram de antihidrogen (antimaterie) cost\u0103 fabuloasa sum\u0103 de 62,5 trilioane de dolari?\" \/>\n<meta property=\"og:description\" content=\"\u00cen 1930, faimosul fizician teoretician englez Paul Dirac, deriv\u00e2nd ecua\u021bia relativist\u0103 a mi\u0219c\u0103rii pentru c\u00e2mpul electronic, a ob\u021binut \u0219i o solu\u021bie pentru o alt\u0103 particul\u0103 cu aceea\u0219i mas\u0103 \u0219i sarcin\u0103 electric\u0103 pozitiv\u0103, opus\u0103. 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