{"id":35450,"date":"2017-10-03T08:06:25","date_gmt":"2017-10-03T08:06:25","guid":{"rendered":"http:\/\/raed.academy\/?p=35450"},"modified":"2017-10-05T09:57:38","modified_gmt":"2017-10-05T09:57:38","slug":"viatge-al-fons-la-materia","status":"publish","type":"post","link":"https:\/\/raed.academy\/ca\/viatge-al-fons-la-materia\/","title":{"rendered":"Viatge al fons de la mat\u00e8ria"},"content":{"rendered":"

“Hi ha m\u00e9s part\u00edcules fonamentals dins de quarks? No ho sabem, per\u00f2 estarien confinades per una for\u00e7a 100 milions de vegades m\u00e9s forta de les que coneixem”<\/h2>\n

\"ViatgeJerome Friedman<\/strong><\/a>, premi Nobel de F\u00edsica i acad\u00e8mic d’honor de la Reial Acad\u00e8mia Europea de Doctors-Barcelona 1914<\/strong> (RAED), respon amb honestedat i rigor a la pregunta que li plantegen de manera m\u00e9s recurrent despr\u00e9s d’haver demostrat de manera emp\u00edrica l’exist\u00e8ncia dels quarks, les part\u00edcules de mat\u00e8ria m\u00e9s petites, que s’amaguen a l’interior dels protons i neutrons: “Hi ha m\u00e9s part\u00edcules fonamentals dins dels quarks? no ho sabem, per\u00f2 no ho podem descartar. En qualsevol cas, la f\u00edsica qu\u00e0ntica ens indica que aquestes hipot\u00e8tiques part\u00edcules estarien confinades per una for\u00e7a extremadament potent. M\u00e9s de 100 milions de vegades m\u00e9s forta que les que coneixem”, explica Friedman.<\/p>\n

L’acad\u00e8mic impartir\u00e0 el proper 7 de novembre a Sevilla una confer\u00e8ncia dins del cicle organitzat per la Fundaci\u00f3 Cajasol<\/strong><\/a> i la RAED amb el t\u00edtol “Estamos realmente hechos de quarks? Are we really made of quarks?”<\/strong>. Una sessi\u00f3 que obre un cicle en qu\u00e8 tres premis Nobel de diferents \u00e0mbits que a la vegada s\u00f3n acad\u00e8mics d’honor de la Reial Acad\u00e8mia pronunciaran confer\u00e8ncies divulgatives a la capital andalusa. A Friedman s’afegiran Aaron Ciechanover<\/strong><\/a>, premi Nobel de Qu\u00edmica, i Erwin Neher<\/strong><\/a>, premi Nobel de Medicina.<\/p>\n

\"Dr.

Dr. Jerome Isaac Friedman
Premi Nobel de F\u00edsica 1990<\/p><\/div>\n

Friedman explica com els \u00faltims descobriments del Centre Europeu per a la Investigaci\u00f3 Nuclear (CERN) confirmen l’exist\u00e8ncia real dels quarks i que all\u00f2 que la f\u00edsica encara no ha descobert probablement \u00e9s m\u00e9s del que sabem avui dia. Tot i aix\u00ed, assenyala, la tecnologia actual no ens permet anar m\u00e9s enll\u00e0. En aquest sentit, l’acad\u00e8mic recorda que fins entrada la d\u00e8cada dels 80 del segle passat la comunitat cient\u00edfica tampoc reconeixia l’exist\u00e8ncia d’aquests fermions. “Es deien que funcionaven en una representaci\u00f3 te\u00f2rica, per\u00f2 que no eren reals, i que en qualsevol cas eren estructures difuses, per\u00f2 no part\u00edcules elementals”, assegura.<\/p>\n

Ara, prossegueix Friedman amb la seva argumentaci\u00f3, \u00e9s tan habitual dir que l’\u00e0tom de carboni es compon de 6 electrons, 6 protons i 6 neutrons, com dir que consta de 6 electrons i 36 quarks. Aquesta part\u00edcula fins i tot t\u00e9 una mida: 10-17 cm. “Els primers estudis que realitzem a l’accelerador lineal de la Universitat de Stanford<\/strong><\/a> i al Centre de Tecnologia de Massachusetts<\/strong><\/a> (MIT) entre 1967 i 1974 ens van permetre afirmar que els quarks tenien una estructura pr\u00f2pia i una din\u00e0mica pr\u00f2pia. I a poc a poc els te\u00f2rics van abandonar les anteriors teories sobre la mat\u00e8ria”, indica el f\u00edsic, que a el seu discurs aborda tota la traject\u00f2ria de la investigaci\u00f3 de la f\u00edsica nuclear i qu\u00e0ntica fins arribar al moment actual, en qu\u00e8 la teoria de les Supercordes suggereix que els constituents fonamentals de la realitat s\u00f3n cordes d’una longitud de Planck (10-32 cm).<\/p>\n","protected":false},"excerpt":{"rendered":"

“Hi ha m\u00e9s part\u00edcules fonamentals dins de quarks? No ho sabem, per\u00f2 estarien confinades per una for\u00e7a 100 milions de vegades m\u00e9s forta de les que coneixem” Jerome Friedman, premi Nobel de F\u00edsica i acad\u00e8mic d’honor de la Reial Acad\u00e8mia Europea de Doctors-Barcelona 1914 (RAED), respon amb honestedat i rigor a la pregunta que li […]<\/p>\n","protected":false},"author":12,"featured_media":35506,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[72],"tags":[],"class_list":["post-35450","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-ca","et-has-post-format-content","et_post_format-et-post-format-standard"],"yoast_head":"\nViatge al fons de la mat\u00e8ria - Reial Acad\u00e8mia Europea de Doctors<\/title>\n<meta name=\"description\" content=\"Estem realment fets de quarks? 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