{"id":21158,"date":"2016-01-24T12:47:27","date_gmt":"2016-01-24T20:47:27","guid":{"rendered":"http:\/\/lifeboat.com\/blog\/2016\/01\/how-time-could-move-backwards-in-parallel-universes"},"modified":"2017-04-24T22:50:44","modified_gmt":"2017-04-25T05:50:44","slug":"how-time-could-move-backwards-in-parallel-universes","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2016\/01\/how-time-could-move-backwards-in-parallel-universes","title":{"rendered":"How Time Could Move Backwards In Parallel Universes"},"content":{"rendered":"<p><a class=\"blog-photo\" href=\"http:\/\/www.iflscience.com\/sites\/www.iflscience.com\/files\/blog\/%5Bnid%5D\/shutterstock_271332740.jpg\"><img decoding=\"async\" class=\"aligncenter\" src=\"\"><\/a><\/p>\n<p>Understanding time is one of the big open questions of physics, and it has puzzled philosophers throughout history. What is time? Why does it appear to have a direction? The concept is defined as the \u201carrow of time,\u201d which is used to indicate that time is asymmetric \u2013 even though most laws of the universe are perfectly symmetric.<\/p>\n<p>A potential explanation for this has now been put forward. Physicist Sean Carroll from CalTech and cosmologist Alan Guth from MIT created a simulation that shows that arrows of time can arise naturally from a perfectly symmetric system of equations.<\/p>\n<p>The <a href=\"http:\/\/www.exactlywhatistime.com\/the-arrow-of-time\/\">arrow of time<\/a> comes from observing that time does indeed seem to pass for us and that the direction of time is consistent with the increase in entropy in the universe. <a href=\"http:\/\/hyperphysics.phy-astr.gsu.edu\/hbase\/therm\/entrop.html\">Entropy<\/a> is the measure of the disorder of the world; an intact egg has less entropy than a broken one, and if we see a broken egg, we know that it used to be unbroken. Our experience tells us that broken eggs don\u2019t jump back together, that ice cubes melt, and that tidying up a room requires a lot more energy than making it messy.<\/p>\n<p><a href=\"http:\/\/www.iflscience.com\/physics\/time-moving-forward-illusion\" target=\"_blank\">Read more<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Understanding time is one of the big open questions of physics, and it has puzzled philosophers throughout history. What is time? Why does it appear to have a direction? The concept is defined as the \u201carrow of time,\u201d which is used to indicate that time is asymmetric \u2013 even though most laws of the universe [\u2026]<\/p>\n","protected":false},"author":387,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33,41,219],"tags":[],"class_list":["post-21158","post","type-post","status-publish","format-standard","hentry","category-cosmology","category-information-science","category-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/21158","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/387"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=21158"}],"version-history":[{"count":1,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/21158\/revisions"}],"predecessor-version":[{"id":44354,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/21158\/revisions\/44354"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=21158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=21158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=21158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}