{"id":13475,"date":"2020-07-07T07:42:46","date_gmt":"2020-07-07T14:42:46","guid":{"rendered":"http:\/\/www.preposterousuniverse.com\/blog\/?p=13475"},"modified":"2020-07-12T17:27:45","modified_gmt":"2020-07-13T00:27:45","slug":"the-biggest-ideas-in-the-universe-16-gravity","status":"publish","type":"post","link":"https:\/\/preposterousuniverse.com\/blog\/2020\/07\/07\/the-biggest-ideas-in-the-universe-16-gravity\/","title":{"rendered":"The Biggest Ideas in the Universe | 16. Gravity"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Gravity! This one&#8217;s sure to be a crowd-pleaser. We take advantage of some of our previous discussion of curvature and spacetime, but we also talk about Einstein&#8217;s physical motivations for inventing general relativity, and the origin of gravitational time dilation and the like.<\/p>\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"lyte-wrapper\" title=\"The Biggest Ideas in the Universe | 16. Gravity\" style=\"width:640px;max-width:100%;margin:5px;\"><div class=\"lyMe\" id=\"WYL_353lEB63iyg\" itemprop=\"video\" itemscope itemtype=\"https:\/\/schema.org\/VideoObject\"><div><meta itemprop=\"thumbnailUrl\" content=\"https:\/\/i.ytimg.com\/vi\/353lEB63iyg\/hqdefault.jpg\" \/><meta itemprop=\"embedURL\" content=\"https:\/\/www.youtube.com\/embed\/353lEB63iyg\" \/><meta itemprop=\"duration\" content=\"PT1H49M32S\" \/><meta itemprop=\"uploadDate\" content=\"2020-07-07T14:42:07Z\" \/><\/div><div id=\"lyte_353lEB63iyg\" data-src=\"https:\/\/i.ytimg.com\/vi\/353lEB63iyg\/hqdefault.jpg\" class=\"pL\"><div class=\"tC\"><div class=\"tT\" itemprop=\"name\">The Biggest Ideas in the Universe | 16. Gravity<\/div><\/div><div class=\"play\"><\/div><div class=\"ctrl\"><div class=\"Lctrl\"><\/div><div class=\"Rctrl\"><\/div><\/div><\/div><noscript><a href=\"https:\/\/youtu.be\/353lEB63iyg\" rel=\"nofollow\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i.ytimg.com\/vi\/353lEB63iyg\/0.jpg\" alt=\"The Biggest Ideas in the Universe | 16. Gravity\" width=\"640\" height=\"340\" \/><br \/>Watch this video on YouTube<\/a><\/noscript><meta itemprop=\"description\" content=\"The Biggest Ideas in the Universe is a series of videos where I talk informally about some of the fundamental concepts that help us understand our natural world. Exceedingly casual, not overly polished, and meant for absolutely everybody. This is Idea #16, &quot;Gravity.&quot; By which we mean Einstein&#039;s theory of General Relativity, according to which gravity is the curvature of spacetime. Since we&#039;ve already learned about spacetime and about curvature (geometry), this one is a breeze. My web page: http:\/\/www.preposterousuniverse.com\/ My YouTube channel: https:\/\/www.youtube.com\/c\/seancarroll Mindscape podcast: http:\/\/www.preposterousuniverse.com\/podcast The Biggest Ideas playlist: https:\/\/www.youtube.com\/playlist?list=PLrxfgDEc2NxZJcWcrxH3jyjUUrJlnoyzX Blog posts for the series: http:\/\/www.preposterousuniverse.com\/blog\/category\/biggest-ideas-in-the-universe\/ Background image: Astronaut Bruce McCandless floating in space, NASA. https:\/\/www.nasa.gov\/astronautprofiles\/mccandless #science #physics #ideas #universe #learning #cosmology #philosophy #gravity #generalrelativity #einstein #spacetime\"><\/div><\/div><div class=\"lL\" style=\"max-width:100%;width:640px;margin:5px;\"><\/div><figcaption><\/figcaption><\/figure>\n\n\n<p class=\"wp-block-paragraph\">And here is the associated Q&amp;A video. Distinguished mostly by a deeper dive into black holes, including the information-loss puzzle.<\/p>\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"lyte-wrapper\" title=\"The Biggest Ideas in the Universe | Q&amp;amp;A 16 - Gravity\" style=\"width:640px;max-width:100%;margin:5px;\"><div class=\"lyMe\" id=\"WYL_2mxAyD28icU\" itemprop=\"video\" itemscope itemtype=\"https:\/\/schema.org\/VideoObject\"><div><meta itemprop=\"thumbnailUrl\" content=\"https:\/\/i.ytimg.com\/vi\/2mxAyD28icU\/hqdefault.jpg\" \/><meta itemprop=\"embedURL\" content=\"https:\/\/www.youtube.com\/embed\/2mxAyD28icU\" \/><meta itemprop=\"duration\" content=\"PT1H10M9S\" \/><meta itemprop=\"uploadDate\" content=\"2020-07-12T15:15:14Z\" \/><\/div><div id=\"lyte_2mxAyD28icU\" data-src=\"https:\/\/i.ytimg.com\/vi\/2mxAyD28icU\/hqdefault.jpg\" class=\"pL\"><div class=\"tC\"><div class=\"tT\" itemprop=\"name\">The Biggest Ideas in the Universe | Q&amp;A 16 - Gravity<\/div><\/div><div class=\"play\"><\/div><div class=\"ctrl\"><div class=\"Lctrl\"><\/div><div class=\"Rctrl\"><\/div><\/div><\/div><noscript><a href=\"https:\/\/youtu.be\/2mxAyD28icU\" rel=\"nofollow\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i.ytimg.com\/vi\/2mxAyD28icU\/0.jpg\" alt=\"The Biggest Ideas in the Universe | Q&amp;amp;A 16 - Gravity\" width=\"640\" height=\"340\" \/><br \/>Watch this video on YouTube<\/a><\/noscript><meta itemprop=\"description\" content=\"The Biggest Ideas in the Universe is a series of videos where I talk informally about some of the fundamental concepts that help us understand our natural world. Exceedingly casual, not overly polished, and meant for absolutely everybody. This is the Q&amp;A video for Idea #16, &quot;Gravity.&quot; We cover some of the inspiration for general relativity (the Principles of Equivalence and Mach), and do quite a bit more on black holes, including the information-loss puzzle. My web page: http:\/\/www.preposterousuniverse.com\/ My YouTube channel: https:\/\/www.youtube.com\/c\/seancarroll Mindscape podcast: http:\/\/www.preposterousuniverse.com\/podcast The Biggest Ideas playlist: https:\/\/www.youtube.com\/playlist?list=PLrxfgDEc2NxZJcWcrxH3jyjUUrJlnoyzX Blog posts for the series: http:\/\/www.preposterousuniverse.com\/blog\/category\/biggest-ideas-in-the-universe\/ Background image: Astronaut Bruce McCandless floating in space, NASA. https:\/\/www.nasa.gov\/astronautprofiles\/mccandless #science #physics #ideas #universe #learning #cosmology #philosophy #gravity #generalrelativity #einstein #spacetime\"><\/div><\/div><div class=\"lL\" style=\"max-width:100%;width:640px;margin:5px;\"><\/div><figcaption><\/figcaption><\/figure>","protected":false},"excerpt":{"rendered":"<p>Gravity! This one&#8217;s sure to be a crowd-pleaser. We take advantage of some of our previous discussion of curvature and spacetime, but we also talk about Einstein&#8217;s physical motivations for inventing general relativity, and the origin of gravitational time dilation and the like. And here is the associated Q&amp;A video. Distinguished mostly by a deeper [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[137,28],"tags":[],"class_list":["post-13475","post","type-post","status-publish","format-standard","hentry","category-biggest-ideas-in-the-universe","category-science"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/posts\/13475","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/comments?post=13475"}],"version-history":[{"count":3,"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/posts\/13475\/revisions"}],"predecessor-version":[{"id":13484,"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/posts\/13475\/revisions\/13484"}],"wp:attachment":[{"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/media?parent=13475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/categories?post=13475"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/tags?post=13475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}