{"id":2329,"date":"2020-02-22T15:43:39","date_gmt":"2020-02-22T15:43:39","guid":{"rendered":"https:\/\/zzip.dk\/video\/?p=2329"},"modified":"2020-02-22T15:49:16","modified_gmt":"2020-02-22T15:49:16","slug":"ole-roemer","status":"publish","type":"post","link":"https:\/\/duda.dk\/video\/astronomi\/ole-roemer\/","title":{"rendered":"Astronomi – Ole R\u00f8mer (1644-1710)"},"content":{"rendered":"
[vc_row][vc_column]

Ole R\u00f8mer og lysets hastighed<\/span><\/h4>[vc_column_text]Den 9. november 1676 befandt den danske astronom Ole R\u00f8mer sig i Paris, hvor han sammen med mesterastronomen Jean Picard kiggede op mod vores solsystems gigant, gasplaneten Jupiter.<\/p>\n

De holdt \u00f8je med Jupiters inderste m\u00e5ne Io for at se, hvorn\u00e5r den kom til syne efter sin 42,5 timer lange kredsl\u00f8bstur om Jupiter.<\/p>\n

Ole R\u00f8mer havde en teori om, at Io ville v\u00e6re 10 minutter forsinket, fordi det tog tid for lyset at n\u00e5 Jorden. Og han fik ret.<\/p>\n

Siden antikken havde videnskabsfolk diskuteret, om lyset havde en hastighed. Men det var danskeren Ole R\u00f8mer, der som den f\u00f8rste beviste det. Og det gjorde ham ber\u00f8mt i hele den videnskabelige verden i en alder af 32 \u00e5r.<\/p>\n

Ole R\u00f8mer opdagede lysets \u2019t\u00f8ven\u2019, fordi han undrede sig over, at der var forskel p\u00e5 Io\u2019s oml\u00f8bstid \u2013 m\u00e5neform\u00f8rkelse og tilsynekomst \u2013 alts\u00e5 hvorn\u00e5r den gik ind bag Jupiters skygge, og hvorn\u00e5r den kom til syne igen.<\/p>\n

Oml\u00f8bstiden burde v\u00e6re konstant (42,5 timer), men den svingede med op til 29 minutter.<\/p>\n

Ole R\u00f8mer mente, at forklaringen m\u00e5tte v\u00e6re, at lyset havde en hastighed. P\u00e5 den m\u00e5de ville det tage l\u00e6ngere tid for os nede p\u00e5 Jorden at se et himmellegeme, n\u00e5r vi var l\u00e6ngere v\u00e6k. Og hans udregning i dag for pr\u00e6cis 340 \u00e5r siden beviste det.<\/p>\n

Lysets hastighed er \u00e9n af grundstenene i fysikken i dag.<\/p>\n

Jupiter og de fire m\u00e5ner har spillet en stor rolle i Ole R\u00f8mers forskning, og han og Jean Picard har ogs\u00e5 brugt dem til at fastl\u00e6gge, hvor langt der var fra \u00f8en Hven i \u00d8resund til Paris.<\/p>\n

N\u00e5r man vidste det, kunne man korrigere Tycho Brahes observationer fra Hven til at forudsige astronomiske begivenheder.-[\/vc_column_text][\/vc_column][\/vc_row]\n<\/div>","protected":false},"excerpt":{"rendered":"

[vc_row][vc_column][vc_column_text]Den 9. november 1676 befandt den danske astronom Ole R\u00f8mer sig i Paris, hvor han sammen med mesterastronomen Jean Picard kiggede op mod vores solsystems gigant, gasplaneten Jupiter. De holdt \u00f8je med Jupiters inderste m\u00e5ne Io for at se, hvorn\u00e5r den kom til syne efter sin 42,5 timer lange kredsl\u00f8bstur om Jupiter. Ole R\u00f8mer havde…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[72],"tags":[],"post_series":[],"class_list":["post-2329","post","type-post","status-publish","format-standard","hentry","category-astronomi","entry","no-media"],"yoast_head":"\nAstronomi - Ole R\u00f8mer (1644-1710) - DUDAs videoer<\/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:\/\/duda.dk\/video\/astronomi\/ole-roemer\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Astronomi - Ole R\u00f8mer (1644-1710)\" \/>\n<meta property=\"og:description\" content=\"[vc_row][vc_column][vc_column_text]Den 9. november 1676 befandt den danske astronom Ole R\u00f8mer sig i Paris, hvor han sammen med mesterastronomen Jean Picard kiggede op mod vores solsystems gigant, gasplaneten Jupiter. De holdt \u00f8je med Jupiters inderste m\u00e5ne Io for at se, hvorn\u00e5r den kom til syne efter sin 42,5 timer lange kredsl\u00f8bstur om Jupiter. Ole R\u00f8mer havde…\" \/>\n<meta property=\"og:url\" content=\"https:\/\/duda.dk\/video\/astronomi\/ole-roemer\/\" \/>\n<meta property=\"og:site_name\" content=\"DUDAs videoer\" \/>\n<meta property=\"article:published_time\" content=\"2020-02-22T15:43:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-02-22T15:49:16+00:00\" \/>\n<meta name=\"author\" content=\"Menares\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Menares\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/astronomi\\\/ole-roemer\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/astronomi\\\/ole-roemer\\\/\"},\"author\":{\"name\":\"Menares\",\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/#\\\/schema\\\/person\\\/d55ed332af3aa2b904423a4852c509c5\"},\"headline\":\"Astronomi – Ole R\u00f8mer (1644-1710)\",\"datePublished\":\"2020-02-22T15:43:39+00:00\",\"dateModified\":\"2020-02-22T15:49:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/astronomi\\\/ole-roemer\\\/\"},\"wordCount\":331,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/#\\\/schema\\\/person\\\/d55ed332af3aa2b904423a4852c509c5\"},\"articleSection\":[\"Astronomi\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/astronomi\\\/ole-roemer\\\/\",\"url\":\"https:\\\/\\\/duda.dk\\\/video\\\/astronomi\\\/ole-roemer\\\/\",\"name\":\"Astronomi - Ole R\u00f8mer (1644-1710) - DUDAs videoer\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/#website\"},\"datePublished\":\"2020-02-22T15:43:39+00:00\",\"dateModified\":\"2020-02-22T15:49:16+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/astronomi\\\/ole-roemer\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/duda.dk\\\/video\\\/astronomi\\\/ole-roemer\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/astronomi\\\/ole-roemer\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/duda.dk\\\/video\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Astronomi – Ole R\u00f8mer (1644-1710)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/#website\",\"url\":\"https:\\\/\\\/duda.dk\\\/video\\\/\",\"name\":\"DUDAs videoer\",\"description\":\"Undervisningsfilm og l\u00e6ringsvideoer for folkeskolen\",\"publisher\":{\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/#\\\/schema\\\/person\\\/d55ed332af3aa2b904423a4852c509c5\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/duda.dk\\\/video\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/duda.dk\\\/video\\\/#\\\/schema\\\/person\\\/d55ed332af3aa2b904423a4852c509c5\",\"name\":\"Menares\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g\",\"caption\":\"Menares\"},\"logo\":{\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g\"},\"url\":\"#\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Astronomi - Ole R\u00f8mer (1644-1710) - DUDAs videoer","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/duda.dk\/video\/astronomi\/ole-roemer\/","og_locale":"en_US","og_type":"article","og_title":"Astronomi - Ole R\u00f8mer (1644-1710)","og_description":"[vc_row][vc_column][vc_column_text]Den 9. november 1676 befandt den danske astronom Ole R\u00f8mer sig i Paris, hvor han sammen med mesterastronomen Jean Picard kiggede op mod vores solsystems gigant, gasplaneten Jupiter. De holdt \u00f8je med Jupiters inderste m\u00e5ne Io for at se, hvorn\u00e5r den kom til syne efter sin 42,5 timer lange kredsl\u00f8bstur om Jupiter. Ole R\u00f8mer havde…","og_url":"https:\/\/duda.dk\/video\/astronomi\/ole-roemer\/","og_site_name":"DUDAs videoer","article_published_time":"2020-02-22T15:43:39+00:00","article_modified_time":"2020-02-22T15:49:16+00:00","author":"Menares","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Menares","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/duda.dk\/video\/astronomi\/ole-roemer\/#article","isPartOf":{"@id":"https:\/\/duda.dk\/video\/astronomi\/ole-roemer\/"},"author":{"name":"Menares","@id":"https:\/\/duda.dk\/video\/#\/schema\/person\/d55ed332af3aa2b904423a4852c509c5"},"headline":"Astronomi – Ole R\u00f8mer (1644-1710)","datePublished":"2020-02-22T15:43:39+00:00","dateModified":"2020-02-22T15:49:16+00:00","mainEntityOfPage":{"@id":"https:\/\/duda.dk\/video\/astronomi\/ole-roemer\/"},"wordCount":331,"commentCount":0,"publisher":{"@id":"https:\/\/duda.dk\/video\/#\/schema\/person\/d55ed332af3aa2b904423a4852c509c5"},"articleSection":["Astronomi"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/duda.dk\/video\/astronomi\/ole-roemer\/","url":"https:\/\/duda.dk\/video\/astronomi\/ole-roemer\/","name":"Astronomi - Ole R\u00f8mer (1644-1710) - DUDAs videoer","isPartOf":{"@id":"https:\/\/duda.dk\/video\/#website"},"datePublished":"2020-02-22T15:43:39+00:00","dateModified":"2020-02-22T15:49:16+00:00","breadcrumb":{"@id":"https:\/\/duda.dk\/video\/astronomi\/ole-roemer\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/duda.dk\/video\/astronomi\/ole-roemer\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/duda.dk\/video\/astronomi\/ole-roemer\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/duda.dk\/video\/"},{"@type":"ListItem","position":2,"name":"Astronomi – Ole R\u00f8mer (1644-1710)"}]},{"@type":"WebSite","@id":"https:\/\/duda.dk\/video\/#website","url":"https:\/\/duda.dk\/video\/","name":"DUDAs videoer","description":"Undervisningsfilm og l\u00e6ringsvideoer for folkeskolen","publisher":{"@id":"https:\/\/duda.dk\/video\/#\/schema\/person\/d55ed332af3aa2b904423a4852c509c5"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/duda.dk\/video\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/duda.dk\/video\/#\/schema\/person\/d55ed332af3aa2b904423a4852c509c5","name":"Menares","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g","caption":"Menares"},"logo":{"@id":"https:\/\/secure.gravatar.com\/avatar\/f178a903a8eec56dad7c1268b0541c40b7990edb5d1fd1a63b15c9bfe3685c45?s=96&d=mm&r=g"},"url":"#"}]}},"_links":{"self":[{"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/posts\/2329","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/comments?post=2329"}],"version-history":[{"count":5,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/posts\/2329\/revisions"}],"predecessor-version":[{"id":2334,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/posts\/2329\/revisions\/2334"}],"wp:attachment":[{"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/media?parent=2329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/categories?post=2329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/tags?post=2329"},{"taxonomy":"post_series","embeddable":true,"href":"https:\/\/duda.dk\/video\/wp-json\/wp\/v2\/post_series?post=2329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}