{"id":749,"date":"2021-06-22T07:00:00","date_gmt":"2021-06-22T05:00:00","guid":{"rendered":"https:\/\/cieib.es\/?p=749"},"modified":"2021-05-29T11:01:25","modified_gmt":"2021-05-29T09:01:25","slug":"calendari-olimpic","status":"publish","type":"post","link":"https:\/\/cieib.es\/?p=749","title":{"rendered":"Calendari ol\u00edmpic"},"content":{"rendered":"\n

El conegut com mecanisme d’Anticitera<\/strong> \u00e9s un artefacte mec\u00e0nic primitiu que podr\u00edem assimilar a una computadora anal\u00f2gica. Descobert el 1900 per un pescador d’esponges, fou trobat a la costa de l’illa grega del mateix nom, entre Citera i Creta. Pel que fa a la dataci\u00f3 caldria situar-la pels volts de l’any 87 aC<\/strong> o segons altres recerques entre el 140 i el 100 aC. \u00c9s si no el primer, un dels mecanismes d’engranatges m\u00e9s antics que es coneixen. Fou dissenyat per poder seguir el moviment dels cossos celestes gr\u00e0cies a uns engranatges diferencials, sorprenentment coneguts i divulgats a partir del segle XVI. En un article de Philip Ball<\/strong> i Tony Freeth<\/strong> publicat a la revista Nature<\/strong> (454; 2008) el mecanisme serviria tamb\u00e9 per fixar amb exactitud la celebraci\u00f3 dels Jocs Ol\u00edmpics<\/strong> a l’antiguitat. L’interior de l’artefacte t\u00e9 una inscripci\u00f3 que indica Nemea<\/strong> en refer\u00e8ncia a un dels jocs que van ser m\u00e9s importants, i Olimpia<\/strong>. Amb aquests dials, es fixava amb precisi\u00f3 l’\u00faltima lluna plena m\u00e9s pr\u00f2xima al solstici d’estiu cada quatre anys, data en la qual s’iniciaven els jocs. El mecanisme d’Anticitera \u00e9s considerat per a molts un Oopart<\/strong>, acr\u00f2nim en angl\u00e8s de Out of Place Artifact (literalment, \u2018artefacte fora de lloc’). El terme fou encunyat pel zo\u00f2leg americ\u00e0 Ivan T. Sanderson<\/strong> que fa refer\u00e8ncia a objectes paleontol\u00f2gics i arqueol\u00f2gics que en aparen\u00e7a s\u00f3n trobats \u00aben llocs on es creia impossible per les seves caracter\u00edstiques (complexitat tecnol\u00f2gica, refer\u00e8ncies a la civilitzaci\u00f3 actual, etc.) o perqu\u00e8 no hi hagi objectes semblants de la mateixa proced\u00e8ncia\u00bb. (CIEIB)<\/p>\n\n\n\n

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Anvers i revers del mecanisme d’Anticitera. Museu Arqueol\u00f2gic Nacional de Gr\u00e8cia.<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

El conegut com mecanisme d’Anticitera \u00e9s un artefacte mec\u00e0nic primitiu que podr\u00edem assimilar a una computadora anal\u00f2gica. Descobert el 1900 per un pescador d’esponges, fou trobat a la costa de l’illa grega del mateix nom, entre Citera i Creta. Pel que fa a la dataci\u00f3 caldria situar-la pels volts de l’any 87 aC o segons<\/p>\n

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