{"id":5478,"date":"2021-05-18T17:18:20","date_gmt":"2021-05-19T00:18:20","guid":{"rendered":"https:\/\/www.surfnetkids.com\/video\/?p=5478"},"modified":"2021-05-18T17:23:16","modified_gmt":"2021-05-19T00:23:16","slug":"kilogram-changed-forever","status":"publish","type":"post","link":"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/","title":{"rendered":"The kilogram has changed forever. Here\u2019s why."},"content":{"rendered":"<p>In 2018, 60 delegates from countries around the world gathered together and voted to retire the International Prototype Kilogram (IPK). What is the IPK? Well, it was the physical definition of the kilogram since 1889. Watch this video to learn more about the IPK and what replaced it.<\/p>\n<p><iframe loading=\"lazy\" title=\"The kilogram has changed forever. Here\u2019s why.\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/m-fFRLWBzm8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In 2018, 60 delegates from countries around the world gathered together and voted to retire the International Prototype Kilogram (IPK). What is the IPK? Well, it was the physical definition of the kilogram since 1889. Watch this video to learn &#8230;<a href=\"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/\">[Continue]<\/a><\/p>\n","protected":false},"author":9,"featured_media":5483,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[17],"tags":[],"class_list":{"0":"post-5478","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-science","8":"entry","9":"gs-1","10":"gs-odd","11":"gs-even","12":"gs-featured-content-entry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The kilogram has changed forever. Here\u2019s why. &#187; Video \u00bb Surfnetkids<\/title>\n<meta name=\"description\" content=\"In 2018, 60 delegates from countries around the world gathered together and voted to retire the International Prototype Kilogram (IPK). What is the IPK?\" \/>\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.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The kilogram has changed forever. Here\u2019s why. &#187; Video \u00bb Surfnetkids\" \/>\n<meta property=\"og:description\" content=\"In 2018, 60 delegates from countries around the world gathered together and voted to retire the International Prototype Kilogram (IPK). What is the IPK?\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/\" \/>\n<meta property=\"og:site_name\" content=\"Video \u00bb Surfnetkids\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/surfnetkids\/\" \/>\n<meta property=\"article:published_time\" content=\"2021-05-19T00:18:20+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-05-19T00:23:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.surfnetkids.com\/video\/wp-content\/uploads\/2021\/05\/the-kilogram-has-changed-forever.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"720\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"daniellerup\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@barbarafeldman\" \/>\n<meta name=\"twitter:site\" content=\"@barbarafeldman\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"daniellerup\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/5478\\\/kilogram-changed-forever\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/5478\\\/kilogram-changed-forever\\\/\"},\"author\":{\"name\":\"daniellerup\",\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/#\\\/schema\\\/person\\\/492c5eae2b7be594255f4126f00fe7d6\"},\"headline\":\"The kilogram has changed forever. Here\u2019s why.\",\"datePublished\":\"2021-05-19T00:18:20+00:00\",\"dateModified\":\"2021-05-19T00:23:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/5478\\\/kilogram-changed-forever\\\/\"},\"wordCount\":63,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/5478\\\/kilogram-changed-forever\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/wp-content\\\/uploads\\\/2021\\\/05\\\/the-kilogram-has-changed-forever.jpg\",\"articleSection\":[\"Science\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/5478\\\/kilogram-changed-forever\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/5478\\\/kilogram-changed-forever\\\/\",\"url\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/5478\\\/kilogram-changed-forever\\\/\",\"name\":\"The kilogram has changed forever. Here\u2019s why. &#187; Video \u00bb Surfnetkids\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/5478\\\/kilogram-changed-forever\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/5478\\\/kilogram-changed-forever\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/wp-content\\\/uploads\\\/2021\\\/05\\\/the-kilogram-has-changed-forever.jpg\",\"datePublished\":\"2021-05-19T00:18:20+00:00\",\"dateModified\":\"2021-05-19T00:23:16+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/#\\\/schema\\\/person\\\/492c5eae2b7be594255f4126f00fe7d6\"},\"description\":\"In 2018, 60 delegates from countries around the world gathered together and voted to retire the International Prototype Kilogram (IPK). What is the IPK?\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/5478\\\/kilogram-changed-forever\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/5478\\\/kilogram-changed-forever\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/5478\\\/kilogram-changed-forever\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/wp-content\\\/uploads\\\/2021\\\/05\\\/the-kilogram-has-changed-forever.jpg\",\"contentUrl\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/wp-content\\\/uploads\\\/2021\\\/05\\\/the-kilogram-has-changed-forever.jpg\",\"width\":1280,\"height\":720},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/5478\\\/kilogram-changed-forever\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Video\",\"item\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Science\",\"item\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/category\\\/science\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"The kilogram has changed forever. Here\u2019s why.\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/#website\",\"url\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/\",\"name\":\"Video \u00bb Surfnetkids\",\"description\":\"Educational videos for families and classrooms.\",\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.surfnetkids.com\\\/video\\\/#\\\/schema\\\/person\\\/492c5eae2b7be594255f4126f00fe7d6\",\"name\":\"daniellerup\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/35638f720d767402db5a2db25b6b0b56c630d5389b867eb257c656c0284706df?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/35638f720d767402db5a2db25b6b0b56c630d5389b867eb257c656c0284706df?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/35638f720d767402db5a2db25b6b0b56c630d5389b867eb257c656c0284706df?s=96&d=mm&r=g\",\"caption\":\"daniellerup\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"The kilogram has changed forever. Here\u2019s why. &#187; Video \u00bb Surfnetkids","description":"In 2018, 60 delegates from countries around the world gathered together and voted to retire the International Prototype Kilogram (IPK). What is the IPK?","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:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/","og_locale":"en_US","og_type":"article","og_title":"The kilogram has changed forever. Here\u2019s why. &#187; Video \u00bb Surfnetkids","og_description":"In 2018, 60 delegates from countries around the world gathered together and voted to retire the International Prototype Kilogram (IPK). What is the IPK?","og_url":"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/","og_site_name":"Video \u00bb Surfnetkids","article_publisher":"https:\/\/www.facebook.com\/surfnetkids\/","article_published_time":"2021-05-19T00:18:20+00:00","article_modified_time":"2021-05-19T00:23:16+00:00","og_image":[{"width":1280,"height":720,"url":"https:\/\/www.surfnetkids.com\/video\/wp-content\/uploads\/2021\/05\/the-kilogram-has-changed-forever.jpg","type":"image\/jpeg"}],"author":"daniellerup","twitter_card":"summary_large_image","twitter_creator":"@barbarafeldman","twitter_site":"@barbarafeldman","twitter_misc":{"Written by":"daniellerup"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/#article","isPartOf":{"@id":"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/"},"author":{"name":"daniellerup","@id":"https:\/\/www.surfnetkids.com\/video\/#\/schema\/person\/492c5eae2b7be594255f4126f00fe7d6"},"headline":"The kilogram has changed forever. Here\u2019s why.","datePublished":"2021-05-19T00:18:20+00:00","dateModified":"2021-05-19T00:23:16+00:00","mainEntityOfPage":{"@id":"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/"},"wordCount":63,"commentCount":0,"image":{"@id":"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/#primaryimage"},"thumbnailUrl":"https:\/\/www.surfnetkids.com\/video\/wp-content\/uploads\/2021\/05\/the-kilogram-has-changed-forever.jpg","articleSection":["Science"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/","url":"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/","name":"The kilogram has changed forever. Here\u2019s why. &#187; Video \u00bb Surfnetkids","isPartOf":{"@id":"https:\/\/www.surfnetkids.com\/video\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/#primaryimage"},"image":{"@id":"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/#primaryimage"},"thumbnailUrl":"https:\/\/www.surfnetkids.com\/video\/wp-content\/uploads\/2021\/05\/the-kilogram-has-changed-forever.jpg","datePublished":"2021-05-19T00:18:20+00:00","dateModified":"2021-05-19T00:23:16+00:00","author":{"@id":"https:\/\/www.surfnetkids.com\/video\/#\/schema\/person\/492c5eae2b7be594255f4126f00fe7d6"},"description":"In 2018, 60 delegates from countries around the world gathered together and voted to retire the International Prototype Kilogram (IPK). What is the IPK?","breadcrumb":{"@id":"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/#primaryimage","url":"https:\/\/www.surfnetkids.com\/video\/wp-content\/uploads\/2021\/05\/the-kilogram-has-changed-forever.jpg","contentUrl":"https:\/\/www.surfnetkids.com\/video\/wp-content\/uploads\/2021\/05\/the-kilogram-has-changed-forever.jpg","width":1280,"height":720},{"@type":"BreadcrumbList","@id":"https:\/\/www.surfnetkids.com\/video\/5478\/kilogram-changed-forever\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Video","item":"https:\/\/www.surfnetkids.com\/video\/"},{"@type":"ListItem","position":2,"name":"Science","item":"https:\/\/www.surfnetkids.com\/video\/category\/science\/"},{"@type":"ListItem","position":3,"name":"The kilogram has changed forever. Here\u2019s why."}]},{"@type":"WebSite","@id":"https:\/\/www.surfnetkids.com\/video\/#website","url":"https:\/\/www.surfnetkids.com\/video\/","name":"Video \u00bb Surfnetkids","description":"Educational videos for families and classrooms.","inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.surfnetkids.com\/video\/#\/schema\/person\/492c5eae2b7be594255f4126f00fe7d6","name":"daniellerup","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/35638f720d767402db5a2db25b6b0b56c630d5389b867eb257c656c0284706df?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/35638f720d767402db5a2db25b6b0b56c630d5389b867eb257c656c0284706df?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/35638f720d767402db5a2db25b6b0b56c630d5389b867eb257c656c0284706df?s=96&d=mm&r=g","caption":"daniellerup"}}]}},"_links":{"self":[{"href":"https:\/\/www.surfnetkids.com\/video\/wp-json\/wp\/v2\/posts\/5478","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.surfnetkids.com\/video\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.surfnetkids.com\/video\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.surfnetkids.com\/video\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.surfnetkids.com\/video\/wp-json\/wp\/v2\/comments?post=5478"}],"version-history":[{"count":2,"href":"https:\/\/www.surfnetkids.com\/video\/wp-json\/wp\/v2\/posts\/5478\/revisions"}],"predecessor-version":[{"id":5484,"href":"https:\/\/www.surfnetkids.com\/video\/wp-json\/wp\/v2\/posts\/5478\/revisions\/5484"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.surfnetkids.com\/video\/wp-json\/wp\/v2\/media\/5483"}],"wp:attachment":[{"href":"https:\/\/www.surfnetkids.com\/video\/wp-json\/wp\/v2\/media?parent=5478"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.surfnetkids.com\/video\/wp-json\/wp\/v2\/categories?post=5478"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.surfnetkids.com\/video\/wp-json\/wp\/v2\/tags?post=5478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}