{"id":13030,"date":"2013-01-25T03:03:42","date_gmt":"2013-01-25T08:03:42","guid":{"rendered":"http:\/\/blogs.scienceforums.net\/swansont\/?p=13030"},"modified":"2013-01-25T03:03:42","modified_gmt":"2013-01-25T08:03:42","slug":"thats-what-it-is","status":"publish","type":"post","link":"http:\/\/blogs.scienceforums.net\/swansont\/archives\/13030","title":{"rendered":"That&#039;s What it Is"},"content":{"rendered":"<p><a href=\"http:\/\/scienceblogs.com\/principles\/2013\/01\/24\/physics-is-about-rules-not-facts\/\">Uncertain principles:  Physics Is About Rules, Not Facts<\/a><\/p>\n<blockquote><p>The idea that air resistance forces somehow invalidate Newtonian mechanics is depressingly common, but it\u2019s based on a common misconception of what physics <em>is<\/em>. Physics is not a collection of facts, it\u2019s a set of rules for understanding the universe\u2013 in the specific case of Newtonian physics, rules governing the effect that forces have on the motion of objects. \u201cAll objects near the Earth\u2019s surface fall at the same rate\u201d is not a central idea of Newtonian physics, just one of the simplest predictions from it. The central ideas of Newtonian physics are the rules used to quantify the effect of interactions, chiefly the \u201csecond law of motion\u201d which says that the rate of change of the momentum of an object is equal to the sum of all the forces acting on it.<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Uncertain principles: Physics Is About Rules, Not Facts The idea that air resistance forces somehow invalidate Newtonian mechanics is depressingly common, but it\u2019s based on a common misconception of what physics is. Physics is not a collection of facts, it\u2019s &hellip; <a href=\"http:\/\/blogs.scienceforums.net\/swansont\/archives\/13030\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39,46],"tags":[],"class_list":["post-13030","post","type-post","status-publish","format-standard","hentry","category-physics","category-science-general"],"_links":{"self":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/13030","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/comments?post=13030"}],"version-history":[{"count":0,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/13030\/revisions"}],"wp:attachment":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/media?parent=13030"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/categories?post=13030"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/tags?post=13030"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}