{"id":8519,"date":"2019-07-16T17:01:58","date_gmt":"2019-07-16T15:01:58","guid":{"rendered":"https:\/\/sciencetonnante.wordpress.com\/?p=8519"},"modified":"2020-09-02T23:01:49","modified_gmt":"2020-09-02T21:01:49","slug":"energie-entropie","status":"publish","type":"post","link":"https:\/\/scienceetonnante.com\/blog\/2019\/07\/16\/energie-entropie\/","title":{"rendered":"Crise \u00e9nerg\u00e9tique ou crise entropique ?"},"content":{"rendered":"<p>La vid\u00e9o du jour parle de thermodynamique !<\/p>\n<p><iframe title=\"Crise \u00e9nerg\u00e9tique ? Crise de l&#039;entropie ! \u2014 Science \u00e9tonnante #60\" width=\"770\" height=\"433\" data-src=\"https:\/\/www.youtube.com\/embed\/2Z9p_I3hhUc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" data-load-mode=\"1\"><\/iframe><\/p>\n<p>Les anciens auront remarqu\u00e9 qu&rsquo;il s&rsquo;agit d&rsquo;une reprise un peu arrang\u00e9e d&rsquo;<a href=\"https:\/\/sciencetonnante.wordpress.com\/2014\/04\/14\/crise-energetique-mais-non-crise-entropique\/\">un vieux billet de ce blog <\/a>que je vous invite \u00e0 aller lire si vous voulez quelques compl\u00e9ments.<\/p>\n<p>La pr\u00e9sentation que j&rsquo;ai faite des grands principes de la thermo est \u00e9videmment un peu \u00ab\u00a0\u00e0 la h\u00e2che\u00a0\u00bb, mais \u00e7a permettra j&rsquo;esp\u00e8re de donner quelques id\u00e9es \u00e0 ceux qui ne connaissaient pas le sujet. (Oui car comme certains semblent trop souvent l&rsquo;oublier dans les commentaires, mes vid\u00e9os sont par principe destin\u00e9es \u00e0 ceux qui ne connaissent pas d\u00e9j\u00e0 le sujet !)<!--more--><\/p>\n<p>Parmi les petites choses sur lesquelles je n&rsquo;ai pas insist\u00e9, il y a l&rsquo;id\u00e9e que l&rsquo;\u00e9nergie peut en pratique se d\u00e9finir \u00e0 une constante pr\u00e8s. C&rsquo;est particuli\u00e8rement vrai pour l&rsquo;\u00e9nergie potentielle, pour laquelle le z\u00e9ro de l&rsquo;altitude est arbitraire, mais aussi ici pour l&rsquo;\u00e9nergie thermique. J&rsquo;ai pris arbitrairement comme z\u00e9ro la temp\u00e9rature initial de mes objets (genre mon skieur) mais \u00e9videmment il faudrait compter tout \u00e7a \u00e0 partir du z\u00e9ro absolu !<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La vid\u00e9o du jour parle de thermodynamique ! Les anciens auront remarqu\u00e9 qu&rsquo;il s&rsquo;agit d&rsquo;une reprise un peu arrang\u00e9e d&rsquo;un vieux billet de ce blog que je vous invite \u00e0 aller lire si vous voulez quelques compl\u00e9ments. La pr\u00e9sentation que j&rsquo;ai faite des grands principes de la thermo est \u00e9videmment un peu \u00ab\u00a0\u00e0 la h\u00e2che\u00a0\u00bb,<\/p>\n","protected":false},"author":1,"featured_media":8974,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6],"tags":[52],"class_list":{"0":"post-8519","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-physique","8":"tag-thermodynamique"},"jetpack_featured_media_url":"https:\/\/scienceetonnante.com\/blog\/wp-content\/uploads\/2019\/07\/oil-vignette.jpg","jetpack_sharing_enabled":true,"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/scienceetonnante.com\/blog\/wp-json\/wp\/v2\/posts\/8519","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scienceetonnante.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scienceetonnante.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scienceetonnante.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/scienceetonnante.com\/blog\/wp-json\/wp\/v2\/comments?post=8519"}],"version-history":[{"count":1,"href":"https:\/\/scienceetonnante.com\/blog\/wp-json\/wp\/v2\/posts\/8519\/revisions"}],"predecessor-version":[{"id":8975,"href":"https:\/\/scienceetonnante.com\/blog\/wp-json\/wp\/v2\/posts\/8519\/revisions\/8975"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/scienceetonnante.com\/blog\/wp-json\/wp\/v2\/media\/8974"}],"wp:attachment":[{"href":"https:\/\/scienceetonnante.com\/blog\/wp-json\/wp\/v2\/media?parent=8519"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scienceetonnante.com\/blog\/wp-json\/wp\/v2\/categories?post=8519"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scienceetonnante.com\/blog\/wp-json\/wp\/v2\/tags?post=8519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}