{"id":27453,"date":"2021-03-24T10:30:35","date_gmt":"2021-03-24T14:30:35","guid":{"rendered":"https:\/\/blog.carlrobitaille.org\/?p=27453"},"modified":"2021-03-24T10:30:39","modified_gmt":"2021-03-24T14:30:39","slug":"why-fan-blades-are-always-so-dusty-despite-spinning-so-fast","status":"publish","type":"post","link":"https:\/\/blog.carlrobitaille.org\/?p=27453","title":{"rendered":"Why fan blades are always so dusty, despite spinning so fast."},"content":{"rendered":"\n<figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">At around 1:20 in my lecture, I mentioned Feynman&#39;s interesting comment about boundary layers. He asks why fan blades are always so dusty, despite spinning so fast. Answer: in the boundary layer, the breeze slows down and stops! <a href=\"https:\/\/t.co\/0ks26IHW9e\">https:\/\/t.co\/0ks26IHW9e<\/a> <a href=\"https:\/\/t.co\/utlggHbrth\">pic.twitter.com\/utlggHbrth<\/a><\/p>&mdash; Steven Strogatz (@stevenstrogatz) <a href=\"https:\/\/twitter.com\/stevenstrogatz\/status\/1374483400287916043?ref_src=twsrc%5Etfw\">March 23, 2021<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29],"tags":[],"class_list":["post-27453","post","type-post","status-publish","format-standard","hentry","category-physique"],"_links":{"self":[{"href":"https:\/\/blog.carlrobitaille.org\/index.php?rest_route=\/wp\/v2\/posts\/27453","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.carlrobitaille.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.carlrobitaille.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.carlrobitaille.org\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.carlrobitaille.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=27453"}],"version-history":[{"count":1,"href":"https:\/\/blog.carlrobitaille.org\/index.php?rest_route=\/wp\/v2\/posts\/27453\/revisions"}],"predecessor-version":[{"id":27454,"href":"https:\/\/blog.carlrobitaille.org\/index.php?rest_route=\/wp\/v2\/posts\/27453\/revisions\/27454"}],"wp:attachment":[{"href":"https:\/\/blog.carlrobitaille.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=27453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.carlrobitaille.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.carlrobitaille.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}