{"id":485,"date":"2023-03-12T00:05:00","date_gmt":"2023-03-12T03:05:00","guid":{"rendered":"https:\/\/elreportivo.cl\/olimpia\/?p=485"},"modified":"2023-03-10T13:12:04","modified_gmt":"2023-03-10T16:12:04","slug":"eratostenes-2","status":"publish","type":"post","link":"https:\/\/elreportivo.cl\/olimpia\/2023\/03\/12\/eratostenes-2\/","title":{"rendered":"Erat\u00f3stenes 2"},"content":{"rendered":"\n<div class=\"wp-block-cover alignfull\" style=\"padding-top:20px;padding-right:20px;padding-bottom:20px;padding-left:20px;min-height:635px;aspect-ratio:unset;\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-80 has-background-dim\"><\/span><img decoding=\"async\" class=\"wp-block-cover__image-background wp-image-168\" alt=\"\" src=\"https:\/\/elreportivodeolimpia.cl\/wp-content\/uploads\/2022\/08\/sports-tools.jpg\" data-object-fit=\"cover\"\/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<div class=\"wp-block-media-text alignfull is-stacked-on-mobile is-vertically-aligned-center\"><figure class=\"wp-block-media-text__media\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/elreportivo.cl\/olimpia\/wp-content\/uploads\/2023\/03\/ERATOSTENES-1-1024x576.jpg\" alt=\"\" class=\"wp-image-486 size-full\" srcset=\"https:\/\/elreportivo.cl\/olimpia\/wp-content\/uploads\/2023\/03\/ERATOSTENES-1-1024x576.jpg 1024w, https:\/\/elreportivo.cl\/olimpia\/wp-content\/uploads\/2023\/03\/ERATOSTENES-1-300x169.jpg 300w, https:\/\/elreportivo.cl\/olimpia\/wp-content\/uploads\/2023\/03\/ERATOSTENES-1-768x432.jpg 768w, https:\/\/elreportivo.cl\/olimpia\/wp-content\/uploads\/2023\/03\/ERATOSTENES-1-1536x864.jpg 1536w, https:\/\/elreportivo.cl\/olimpia\/wp-content\/uploads\/2023\/03\/ERATOSTENES-1.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\"><h2 style=\"font-size:24px;font-style:normal;font-weight:500;text-transform:uppercase\" class=\"wp-block-post-title has-background has-vivid-red-background-color\">Erat\u00f3stenes 2<\/h2>\n\n\n<p>Erat\u00f3stenes hizo lo que era habitual en ese momento: contrat\u00f3 a un itinerante. Eran profesionales capacitados para caminar largas distancias con pasos regulares, precisamente para medir distancias entre ciudades.<\/p>\n<p>Sin embargo, antes de recurrir a la pr\u00e1ctica, el sabio pens\u00f3 que ser\u00eda posible utilizar las matem\u00e1ticas para calcular tambi\u00e9n esta distancia.<\/p>\n<p>&#8220;Pretend\u00eda descubrir la distancia entre Siena y Alejandr\u00eda utilizando el tiempo recorrido por los camellos&#8221;, explica el ge\u00f3grafo Leandro Sales Esteves, profesor de la Universidade Presbiteriana Mackenzie (UPM). &#8220;Pero abandon\u00f3 la idea debido a la falta de precisi\u00f3n encontrada en este m\u00e9todo&#8221;.<\/p>\n<p>Para contratar top\u00f3grafos itinerantes, el ge\u00f3grafo asegura que Erat\u00f3stenes necesitaba autorizaci\u00f3n del gobierno de Egipto.<\/p>\n<p>En l\u00ednea recta son unos 800 kil\u00f3metros \u2014hoy, por carretera, el recorrido m\u00e1s corto mide 1.011 kil\u00f3metros y se puede recorrer a pie en 204 horas de marcha.<\/p>\n<p>En la unidad de medida utilizada en ese momento (el estadio, que ten\u00eda poco m\u00e1s de 157 metros), la distancia se determin\u00f3 en 5.040 estadios.<\/p>\n<p>El d\u00eda del solsticio de verano, en Alejandr\u00eda, Erat\u00f3stenes fij\u00f3 un palo perpendicular al suelo. La idea era medir la longitud de la sombra que proyectaba el palo sobre el suelo al mediod\u00eda y as\u00ed hallar el \u00e1ngulo de inclinaci\u00f3n.<\/p>\n<p>Lleg\u00f3 al n\u00famero de 7,2 grados, es decir, la circunferencia total (360\u00ba) dividido por 50. De esta manera, haciendo la triangulaci\u00f3n matem\u00e1tica que ya era conocida, bastaba multiplicar la distancia entre las dos ciudades por 50 para llegar al tama\u00f1o total de la Tierra.<\/p>\n<p>Erat\u00f3stenes lleg\u00f3 al valor equivalente a 39.750 kil\u00f3metros, muy cerca de lo que se conoce hoy: la circunferencia de la Tierra mide 40.075 kil\u00f3metros.<\/p>\n<p>&#8220;Erat\u00f3stenes tambi\u00e9n calcul\u00f3 con gran precisi\u00f3n el radio terrestre, llegando a una medida de 6.366 kil\u00f3metros&#8221;, dice Esteves. &#8220;Actualmente, se sabe que esta medida es de 6.371 kil\u00f3metros&#8221;.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\"><\/div>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"has-text-align-right wp-block-post-date has-text-color has-ast-global-color-5-color has-background has-vivid-red-background-color has-medium-font-size\"><time datetime=\"2023-03-12T00:05:00-03:00\">12\/Mar\/2023<\/time><\/div><\/div><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":486,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"plain-container","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[13],"tags":[],"class_list":["post-485","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novedades"],"_links":{"self":[{"href":"https:\/\/elreportivo.cl\/olimpia\/wp-json\/wp\/v2\/posts\/485","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/elreportivo.cl\/olimpia\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/elreportivo.cl\/olimpia\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/elreportivo.cl\/olimpia\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/elreportivo.cl\/olimpia\/wp-json\/wp\/v2\/comments?post=485"}],"version-history":[{"count":1,"href":"https:\/\/elreportivo.cl\/olimpia\/wp-json\/wp\/v2\/posts\/485\/revisions"}],"predecessor-version":[{"id":487,"href":"https:\/\/elreportivo.cl\/olimpia\/wp-json\/wp\/v2\/posts\/485\/revisions\/487"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/elreportivo.cl\/olimpia\/wp-json\/wp\/v2\/media\/486"}],"wp:attachment":[{"href":"https:\/\/elreportivo.cl\/olimpia\/wp-json\/wp\/v2\/media?parent=485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/elreportivo.cl\/olimpia\/wp-json\/wp\/v2\/categories?post=485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/elreportivo.cl\/olimpia\/wp-json\/wp\/v2\/tags?post=485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}