{"id":398,"date":"2017-01-27T09:55:11","date_gmt":"2017-01-27T08:55:11","guid":{"rendered":"http:\/\/lignesdorages.com\/?p=398"},"modified":"2017-01-27T09:58:01","modified_gmt":"2017-01-27T08:58:01","slug":"petit-voyage-dans-le-monde-des-quanta-etienne-klein","status":"publish","type":"post","link":"https:\/\/lignesdorages.com\/index.php\/2017\/01\/27\/petit-voyage-dans-le-monde-des-quanta-etienne-klein\/","title":{"rendered":"Petit voyage dans le monde des quanta &#8211; Etienne Klein"},"content":{"rendered":"<p>Aujourd\u2019hui on va parler de <strong>physique quantique<\/strong>. Comme souvent ici en rapport direct avec une de mes lectures r\u00e9centes (il appara\u00eet \u00e0 peu pr\u00e8s clair maintenant que ce blog va \u00e0 quelques exceptions pr\u00e8s se concentrer sur ce type d\u2019articles qui sont en quelque sorte des fiches de lectures). <\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"402\" data-permalink=\"https:\/\/lignesdorages.com\/index.php\/2017\/01\/27\/petit-voyage-dans-le-monde-des-quanta-etienne-klein\/shrodingers-cat\/\" data-orig-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/shrodingers-cat.png?fit=601%2C599&amp;ssl=1\" data-orig-size=\"601,599\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"shrodinger&amp;rsquo;s cat\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/shrodingers-cat.png?fit=601%2C599&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/shrodingers-cat.png?resize=601%2C599&#038;ssl=1\" alt=\"\" width=\"601\" height=\"599\" class=\"aligncenter size-full wp-image-402\" srcset=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/shrodingers-cat.png?w=601&amp;ssl=1 601w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/shrodingers-cat.png?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/shrodingers-cat.png?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/shrodingers-cat.png?resize=271%2C270&amp;ssl=1 271w\" sizes=\"auto, (max-width: 601px) 100vw, 601px\" \/><\/p>\n<p>Voil\u00e0, c\u2019est un petit livre, bien \u00e9crit qui se lit bien et clairement on se situe ici dans la vulgarisation scientifique, et je n\u2019ai \u00e9t\u00e9 maltrait\u00e9 par aucune \u00e9quation intempestive lors de la lecture. Avant d&rsquo;aller plus loin, je vais essayer de <strong>r\u00e9pondre \u00e0 une question initiale<\/strong> :  <\/p>\n<h1>Peut on comprendre la physique quantique ? <\/h1>\n<h2>Une science inaccessible <\/h2>\n<p>La physique quantique est g\u00e9n\u00e9ralement consid\u00e9r\u00e9e comme <strong>pas accessible au commun des mortels<\/strong>, tout comme la relativit\u00e9 d\u2019ailleurs (l\u2019autre r\u00e9volution physique du d\u00e9but du XX\u00e8me si\u00e8cle). Perso j\u2019en ai pas entendu parler lors de mon cursus scolaire de base (bac S). C\u2019est aussi g\u00e9n\u00e9ralement des th\u00e9ories physiques qui sont pas vraiment trait\u00e9es dans la culture pop (t\u2019imagine la gueule de starwars si tu prends en compte la relativit\u00e9).<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"405\" data-permalink=\"https:\/\/lignesdorages.com\/index.php\/2017\/01\/27\/petit-voyage-dans-le-monde-des-quanta-etienne-klein\/lightspeed\/\" data-orig-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/lightspeed.gif?fit=500%2C214&amp;ssl=1\" data-orig-size=\"500,214\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"lightspeed\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/lightspeed.gif?fit=500%2C214&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/lightspeed.gif?resize=500%2C214&#038;ssl=1\" alt=\"\" width=\"500\" height=\"214\" class=\"aligncenter size-full wp-image-405\" \/><\/p>\n<p>Donc en gros y\u2019a comme une sorte de consensus pour dire que c\u2019est juste imbitable et que \u00e7a sert m\u00eame \u00e0 rien d\u2019essayer d\u2019en parler. Je pense d\u2019ailleurs qu\u2019une excellente introduction au sujet est la conf\u00e9rence qu\u2019en a fait Alexandre Astier :<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/8mSed9Du0kU?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p>Donc voil\u00e0, \u00e0 priori le truc est compl\u00e8tement herm\u00e9tique, pas compr\u00e9hensible, sans passer par l\u2019\u00e9tape des math\u00e9matiques, et vu le niveau du bouzin on laisse tomber. <\/p>\n<h2>Des tentatives de vulgarisation <\/h2>\n<p>Bon malgr\u00e9 tout, il semble que certains tentent de vouloir expliquer la physique quantique aux b\u00e9otiens. Que ce soit dans le bouquin que j\u2019ai lu, ou sur youtube on trouve du contenu de vulgarisation qui a l\u2019air pas mal:<\/p>\n<ul>\n<li>Chez e-penser : <\/li>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/kZTUhGhJfwk?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/HqyJ7-ibUmo?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/O15hYimr1a0?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<li>Chez science \u00e9tonnante : <\/li>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/Rj3jTw2DxXQ?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/5R6k2mEacZo?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<li>Ici: <\/li>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/j6h6fUKnRAY?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<li>Ou cette s\u00e9rie de conf d\u2019Etienne Klein qui reprend a peut pr\u00eat l\u2019int\u00e9gralit\u00e9 du bouquin :<\/li>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/gnYOnT4C_nk?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/nHaVCK3BVXw?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/xvjfpb1ATG8?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/M9g26-4FsFk?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/zmfYG2TTZGU?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/IWWA1bllCno?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<\/ul>\n<h2>Bon alors qu\u2019est ce qu\u2019on en retient ? <\/h2>\n<p>Apr\u00e8s avoir vu et lu tout \u00e7a, voil\u00e0 en gros ce que j\u2019en retiens. <\/p>\n<p>Clairement la physique \u00e0 ce niveau <strong>d\u00e9passe le cadre de nos habitudes de raisonnement<\/strong>, nos cerveaux ne sont pas fait pour raisonner facilement \u00e0 l\u2019\u00e9chelle quantique (ni d\u2019ailleurs \u00e0 l\u2019\u00e9chelle relativiste). R\u00e9sultat de <strong>milliers d\u2019ann\u00e9es d\u2019\u00e9volution qui nous a fa\u00e7onn\u00e9s pour appr\u00e9hender ais\u00e9ment la physique newtonienne<\/strong> (celle qui nous est utile au quotidien pour pas se vautrer quand on marche ou pour taper dans une balle). Il faut donc aborder le sujet avec une pr\u00e9caution maximum et <strong>se garder de croire qu\u2019on va pouvoir comprendre facilement.<\/strong>   <\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"406\" data-permalink=\"https:\/\/lignesdorages.com\/index.php\/2017\/01\/27\/petit-voyage-dans-le-monde-des-quanta-etienne-klein\/33896d4d39a7bf01519ac7907da36b75343af6c4bf639abc82c6bbdc9b90822d\/\" data-orig-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/33896d4d39a7bf01519ac7907da36b75343af6c4bf639abc82c6bbdc9b90822d.jpg?fit=493%2C204&amp;ssl=1\" data-orig-size=\"493,204\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"33896d4d39a7bf01519ac7907da36b75343af6c4bf639abc82c6bbdc9b90822d\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/33896d4d39a7bf01519ac7907da36b75343af6c4bf639abc82c6bbdc9b90822d.jpg?fit=493%2C204&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/33896d4d39a7bf01519ac7907da36b75343af6c4bf639abc82c6bbdc9b90822d.jpg?resize=493%2C204&#038;ssl=1\" alt=\"\" width=\"493\" height=\"204\" class=\"aligncenter size-full wp-image-406\" srcset=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/33896d4d39a7bf01519ac7907da36b75343af6c4bf639abc82c6bbdc9b90822d.jpg?w=493&amp;ssl=1 493w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/33896d4d39a7bf01519ac7907da36b75343af6c4bf639abc82c6bbdc9b90822d.jpg?resize=300%2C124&amp;ssl=1 300w\" sizes=\"auto, (max-width: 493px) 100vw, 493px\" \/><\/p>\n<p>Oui les math sont sans doute indispensables pour manipuler les concepts de fa\u00e7on efficace, c\u2019est-\u00e0-dire les utiliser pour faire des trucs. Mais je pense qu\u2019<strong>on peut comprendre quelques trucs malgr\u00e9 tout<\/strong>, \u00e0 condition d\u2019accepter un niveau d\u2019abstraction un peu \u00e9lev\u00e9, d\u2019accepter de ne pas savoir et de pas faire de raccourci h\u00e2tifs.<\/p>\n<p>Donc on s\u2019accroche, on attache sa ceinture, on ouvre son esprit, et on plonge dans le monde un peu fou fou de la physique quantique. Comme le disait Richard Feynman:<\/p>\n<blockquote><p>There&rsquo;s a kind of saying that you don&rsquo;t understand its meaning, &lsquo;I don&rsquo;t believe it. It&rsquo;s too crazy. I&rsquo;m not going to accept it.&rsquo;\u2026 You&rsquo;ll have to accept it. It&rsquo;s the way nature works. If you want to know how nature works, we looked at it, carefully. Looking at it, that&rsquo;s the way it looks. You don&rsquo;t like it? Go somewhere else, to another universe where the rules are simpler, philosophically more pleasing, more psychologically easy.<\/p><\/blockquote>\n<h1>Mais pourquoi s&rsquo;y int\u00e9resser<\/h1>\n<p>Pourquoi <strong>s&rsquo;int\u00e9resser \u00e0 cette physique qui ne nous concerne pas<\/strong>. Evidemment elle a plein d&rsquo;applications, mais aucune de ses applications pratiques ne demande de comprendre comment elle fonctionne pour les utiliser. Et puis de toute fa\u00e7on, vu que j&rsquo;ai pas touch\u00e9 aux math, je ne pr\u00e9tends pas pouvoir l&rsquo;utiliser, je l&rsquo;ai dit.<\/p>\n<p>Alors pourquoi s&rsquo;y int\u00e9resser quand m\u00eame ? <\/p>\n<h2>Une exp\u00e9rience<\/h2>\n<p>Je pense que le premier point int\u00e9ressant dans la vulgarisation scientifique ce ces grandes th\u00e9ories (on pourrait parler aussi bien de la relativit\u00e9 ou de l&rsquo;\u00e9volution des esp\u00e8ces), c&rsquo;est que <strong>les imaginer c&rsquo;est d\u00e9j\u00e0 une exp\u00e9rience, un exercice de pens\u00e9e, utile. <\/strong><\/p>\n<h3>Emerveillement<\/h3>\n<p>d&rsquo;abord parce qu&rsquo;il y a une part d&rsquo;\u00e9merveillement dans cette exp\u00e9rience. Je crois que celui qui en parle le mieux c&rsquo;est <strong><a href=\"http:\/\/www.bouletcorp.com\/2015\/08\/25\/brassens-dans-le-cosmos\/\">Boulet dans sa r\u00e9ponse \u00e0 Georges Brassens<\/a><\/strong> (non s\u00e9rieux c&rsquo;est \u00e0 lire \u00e7a). <\/p>\n<figure id=\"attachment_411\" aria-describedby=\"caption-attachment-411\" style=\"width: 765px\" class=\"wp-caption aligncenter\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"411\" data-permalink=\"https:\/\/lignesdorages.com\/index.php\/2017\/01\/27\/petit-voyage-dans-le-monde-des-quanta-etienne-klein\/cosmos-soleilcomplet\/\" data-orig-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/Cosmos-SoleilComplet.gif?fit=765%2C454&amp;ssl=1\" data-orig-size=\"765,454\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Cosmos-SoleilComplet\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;\u00ab\u00a0Pendant ce bref instant, on r\u00e9alise que le ciel est en trois dimensions, et qu&amp;rsquo;on est en permanence propuls\u00e9 \u00e0 des vitesses terrifiantes autour d&amp;rsquo;une \u00e9norme masse d&amp;rsquo;hydrog\u00e8ne en fusion.\u00a0\u00bb Boulet. &lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/Cosmos-SoleilComplet.gif?fit=640%2C380&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/Cosmos-SoleilComplet.gif?resize=640%2C380&#038;ssl=1\" alt=\"\" width=\"640\" height=\"380\" class=\"size-full wp-image-411\" \/><figcaption id=\"caption-attachment-411\" class=\"wp-caption-text\">\u00ab\u00a0Pendant ce bref instant, on r\u00e9alise que le ciel est en trois dimensions, et qu&rsquo;on est en permanence propuls\u00e9 \u00e0 des vitesses terrifiantes autour d&rsquo;une \u00e9norme masse d&rsquo;hydrog\u00e8ne en fusion.\u00a0\u00bb Boulet.<\/figcaption><\/figure>\n<p>On peut en dire autant pour la physique quantique, r\u00e9alis\u00e9 ce qui compose la mati\u00e8re est une exp\u00e9rience assez dingue, m\u00eame si elle est partielle. <\/p>\n<h3>Humilit\u00e9<\/h3>\n<p>Ensuite parce que ces th\u00e9ories sont <strong>un rem\u00e8de assez sur contre la pr\u00e9tention et l&rsquo;orgueil<\/strong>, maladies trop communes pour les grands singes que nous sommes. <\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"412\" data-permalink=\"https:\/\/lignesdorages.com\/index.php\/2017\/01\/27\/petit-voyage-dans-le-monde-des-quanta-etienne-klein\/singe\/\" data-orig-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/singe.gif?fit=500%2C237&amp;ssl=1\" data-orig-size=\"500,237\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"singe\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/singe.gif?fit=500%2C237&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/singe.gif?resize=500%2C237&#038;ssl=1\" alt=\"\" width=\"500\" height=\"237\" class=\"aligncenter size-full wp-image-412\" \/><\/p>\n<p>Oui,<strong> nos cerveaux ne sont pas vraiment fait pour<\/strong> bien comprendre facilement ou r\u00e9aliser parfaitement ce qu&rsquo;implique la relativit\u00e9 ou la physique quantique, nous ne sommes pas des \u00ab\u00a0cr\u00e9atures parfaites\u00a0\u00bb, nous sommes qu&rsquo;<strong>un des r\u00e9sultats hasardeux<\/strong> de l&rsquo;\u00e9volution de la vie sur cette plan\u00e8te, ni pire ni meilleur que les autres bestioles.  <\/p>\n<p>Et je pense que \u00e7a fait du bien de faire cet exercice d&rsquo;humilit\u00e9 r\u00e9guli\u00e8rement.<\/p>\n<h3>Auto-d\u00e9fense<\/h3>\n<p>C&rsquo;est moins fun, mais un autre truc commun de nos vie de grands singes et que r\u00e9guli\u00e8rement certains de nos cong\u00e9n\u00e8res essayent de nous endormir avec de la pseudo science pour <strong>nous vendre tout un tas de merde<\/strong> ou prendre le contr\u00f4le de nos esprits. <\/p>\n<p>Face \u00e0 \u00e7a, <strong>un peu de septicisme<\/strong> et une <strong>mise \u00e0 jour r\u00e9guli\u00e8re de notre connaissance<\/strong> de l&rsquo;\u00e9tat de l&rsquo;art des connaissances scientifique fait office de kit de survie indispensable. <\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"415\" data-permalink=\"https:\/\/lignesdorages.com\/index.php\/2017\/01\/27\/petit-voyage-dans-le-monde-des-quanta-etienne-klein\/powerbalance-meme\/\" data-orig-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/powerbalance-meme.png?fit=1141%2C827&amp;ssl=1\" data-orig-size=\"1141,827\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"powerbalance meme\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/powerbalance-meme.png?fit=640%2C464&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/powerbalance-meme.png?resize=640%2C464&#038;ssl=1\" alt=\"\" width=\"640\" height=\"464\" class=\"aligncenter size-full wp-image-415\" srcset=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/powerbalance-meme.png?w=1141&amp;ssl=1 1141w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/powerbalance-meme.png?resize=300%2C217&amp;ssl=1 300w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/powerbalance-meme.png?resize=768%2C557&amp;ssl=1 768w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/powerbalance-meme.png?resize=1024%2C742&amp;ssl=1 1024w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/powerbalance-meme.png?resize=373%2C270&amp;ssl=1 373w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<p>Je veux dire, quand on voit que des mecs arrivent \u00e0 vendre des pierres \u00ab\u00a0magiques\u00a0\u00bb, des bracelets \u00ab\u00a0magn\u00e9tiques\u00a0\u00bb ou toutes ces conneries. On peut bien imaginer le niveau de bullshit para-scientifique que permet la physique quantique. Y&rsquo;a d&rsquo;ailleurs pas si longtemps j&rsquo;ai du reposer un livre qu&rsquo;on m&rsquo;avait pass\u00e9 car il tombait clairement dans le <strong>bullshit quantique<\/strong> et tirait des conclusions h\u00e2tives.<\/p>\n<h1>Superposition d\u2019\u00e9tats et \u00e9lection pr\u00e9sidentielle<\/h1>\n<p>Bon je vais maintenant te parler de quelques trucs que je trouve fascinant \u00e0 l\u2019\u00e9chelle quantique. Je vais pas essayer de t\u2019expliquer les trucs vu que c\u2019est fait bien mieux que je pourrais jamais par les vulgarisateurs cit\u00e9s plus haut. <\/p>\n<h2>Un monde un peu chelou<\/h2>\n<p>Le premier truc fascinant, c\u2019est \u00e9videmment la <a href=\"https:\/\/toutestquantique.fr\/superposition\/\"><strong>superposition d\u2019\u00e9tat<\/strong><\/a> : le fait qu\u2019une particule peut \u00eatre dans plusieurs \u00e9tats superpos\u00e9s (genre ici et l\u00e0 bas), et que la mesure seule permette de r\u00e9duire \u00e0 une valeur bien d\u00e9finie. <\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/YPlAWN3k6So?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p>Evidemment c\u2019est <strong>fondamentalement chelou<\/strong>. Mais une fois qu\u2019on a admis qu\u2019on pourrait jamais vraiment le comprendre avec notre vision macroscopique de grands singes et trouver le truc \u00ab naturel \u00bb, bah ok, pourquoi pas.<\/p>\n<h2>En m\u00eame temps moi aussi je suis chelou <\/h2>\n<p>Perso quand je pense \u00e0 la superposition d\u2019\u00e9tat je trouve une analogie qui me parle assez bien sur <strong>la fa\u00e7on dont mon cerveau d\u00e9cide ou pas de certains trucs<\/strong>. Et avec un exemple tr\u00e8s concret en ce moment : l\u2019\u00e9lection pr\u00e9sidentielle.<\/p>\n<blockquote><p>\n &#8211; Est-ce que je vais voter ? et si oui pour qui ?<br \/>\n &#8211; Bah, bordel \u00e0 couilles de nonnes, J\u2019en sais foutre rien aujourd\u2019hui !\n<\/p><\/blockquote>\n<p>On va dire qu\u2019en gros j\u2019ai 2 candidats qui sont ceux pour qui il est le plus probable que je vote (la plupart des autres \u00e9tant quasiment exclus, \u00e0 moins d\u2019envisager des strat\u00e9gies aussi cyniques qu\u2019hasardeuses), mais il n\u2019est pas encore certain non plus que je vote. Donc <strong>en gros 3 options possibles<\/strong>.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"416\" data-permalink=\"https:\/\/lignesdorages.com\/index.php\/2017\/01\/27\/petit-voyage-dans-le-monde-des-quanta-etienne-klein\/douche-turd\/\" data-orig-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/douche-turd.gif?fit=480%2C270&amp;ssl=1\" data-orig-size=\"480,270\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"douche turd\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/douche-turd.gif?fit=480%2C270&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/douche-turd.gif?resize=480%2C270&#038;ssl=1\" alt=\"\" width=\"480\" height=\"270\" class=\"aligncenter size-full wp-image-416\" \/><\/p>\n<p>Au final, je sais que je prendrais une d\u00e9cision, mais il est tr\u00e8s possible que \u00e7a se fasse au dernier moment. <strong>Contrairement au monde quantique \u00e9videmment c\u2019est pas du \u00ab vrai \u00bb hasard, plus de l\u2019incertitude<\/strong> (ma d\u00e9cision d\u00e9pendra de la somme des param\u00e8tres au moment de la d\u00e9cision : ce qui aura \u00e9t\u00e9 dit et fait, par les candidats, par moi, ce que j\u2019aurai mang\u00e9 le matin, etc\u2026). N\u2019emp\u00eache qu\u2019en attendant la mesure (le jour du vote) je reste dans un \u00e9tat de superposition, d\u2019ind\u00e9termination, et <strong>tout aussi favorable \u00e0 l\u2019une ou l\u2019autre des options.<\/strong> <\/p>\n<h2>d\u00e9coh\u00e9rence et r\u00e9duction du paquet d&rsquo;onde<\/h2>\n<p>Il est possible que d\u2019ici l\u00e0 je sois <strong>r\u00e9duit \u00e0 un seul choix<\/strong> si <strong>l\u2019environnement \u00e9volue<\/strong> (par exemple si l\u2019un ou les deux candidats potentiels se rendent clairement impropre \u00e0 un vote, ce qui est assez possible), mais l\u00e0 aussi \u00e7a me semble tenir \u00e0 peu pr\u00e8s la comparaison quantique : on aura affaire \u00e0 de la <strong>d\u00e9coh\u00e9rence par interaction avec l\u2019environnement<\/strong>. <\/p>\n<p>Et sinon le jour du vote, <strong>le r\u00e9sultat s\u2019imposera \u00e0 moi<\/strong>. C\u2019est d\u00e9j\u00e0 arriv\u00e9, aux derni\u00e8res r\u00e9gionales, les choix au second tour \u00e9tait tellement mauvais que j\u2019\u00e9tais parti de chez moi pour le bureau de vote sans savoir encore quel bulletin je glisserais dans l\u2019urne (spoiler : aucun). <\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"417\" data-permalink=\"https:\/\/lignesdorages.com\/index.php\/2017\/01\/27\/petit-voyage-dans-le-monde-des-quanta-etienne-klein\/vote-or-die\/\" data-orig-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/vote-or-die.gif?fit=960%2C540&amp;ssl=1\" data-orig-size=\"960,540\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"vote or die\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/vote-or-die.gif?fit=640%2C360&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/vote-or-die.gif?resize=640%2C360&#038;ssl=1\" alt=\"\" width=\"640\" height=\"360\" class=\"aligncenter size-full wp-image-417\" \/><\/p>\n<p>Voil\u00e0, c\u2019est ma fa\u00e7on d\u2019essayer de <strong>ramener l\u2019ind\u00e9termination quantique \u00e0 un truc sensible<\/strong> : quand y\u2019a pas de bonne solution \u00e0 un probl\u00e8me, on peut se trouver dans un \u00e9tat superpos\u00e9 entre les diff\u00e9rentes options possibles, m\u00eame si elles semblent <strong>normalement impossible \u00e0 cumuler<\/strong>. Et seul u<strong>ne circonstance t\u2019obligeant \u00e0 prendre une d\u00e9cision<\/strong> et \u00e0 faire ton choix va permettre de trancher pour une des options et d\u2019\u00e9liminer les autres : bim <strong>r\u00e9duction du paquet d\u2019onde !<\/strong> <\/p>\n<p><code><strong>Note importante:<\/strong> je ne pr\u00e9tends pas du tout ici que mon cerveau fonctionne de fa\u00e7on quantique. A ma connaissance <strong>c'est m\u00eame compl\u00e8tement exclu<\/strong>, la superposition d'\u00e9tat demandant des conditions particuli\u00e8re (vide, temp\u00e9rature proche du 0 absolue) qui ne sont fort heureusement pas r\u00e9unies dans mon cerveau. Non l'id\u00e9e est que mon ind\u00e9cision (due \u00e0 une absence de connaissance de tous les param\u00e8tre qui influeront sur ma d\u00e9cision \u00e0 l'instant T) me permet de me faire <strong>une repr\u00e9sentation compr\u00e9hensible<\/strong> de ce que peut \u00eatre le fonctionnement quantique de la mati\u00e8re. <\/code><\/p>\n<h1>Hasard, d\u00e9terminisme et interpr\u00e9tation.<\/h1>\n<p>Bon l\u2019ind\u00e9termination quantique et la r\u00e9duction du paquet d\u2019onde c\u2019est chelou, c\u2019est rigolo mais bon perso le truc que je trouve ptet encore plus fou fou c\u2019est le hasard quantique. <\/p>\n<h2>Hasard et \u00e9picurisme<\/h2>\n<p>Il semble en effet qu\u2019il existe en physique quantique un \u00ab vrai \u00bb hasard, c\u2019est-\u00e0-dire <strong>un hasard qui n\u2019est pas une somme d\u2019ignorance<\/strong>, m\u00eame en connaissant tous les param\u00e8tres d\u2019entr\u00e9e <strong>on peut pas pr\u00e9dire le r\u00e9sultat d\u2019une exp\u00e9rience autrement que par une probabilit\u00e9<\/strong>.  Un hasard sans variable locale cach\u00e9e. <\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"418\" data-permalink=\"https:\/\/lignesdorages.com\/index.php\/2017\/01\/27\/petit-voyage-dans-le-monde-des-quanta-etienne-klein\/414px-niels_bohr_albert_einstein_by_ehrenfest\/\" data-orig-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/414px-niels_bohr_albert_einstein_by_ehrenfest.jpg?fit=600%2C601&amp;ssl=1\" data-orig-size=\"600,601\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"414px-niels_bohr_albert_einstein_by_ehrenfest\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/414px-niels_bohr_albert_einstein_by_ehrenfest.jpg?fit=600%2C601&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/414px-niels_bohr_albert_einstein_by_ehrenfest.jpg?resize=600%2C601&#038;ssl=1\" alt=\"\" width=\"600\" height=\"601\" class=\"aligncenter size-full wp-image-418\" srcset=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/414px-niels_bohr_albert_einstein_by_ehrenfest.jpg?w=600&amp;ssl=1 600w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/414px-niels_bohr_albert_einstein_by_ehrenfest.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/414px-niels_bohr_albert_einstein_by_ehrenfest.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/414px-niels_bohr_albert_einstein_by_ehrenfest.jpg?resize=270%2C270&amp;ssl=1 270w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>Du coup si on r\u00e9fl\u00e9chit \u00e0 une interpr\u00e9tation de la physique quantique, \u00e7a pose imm\u00e9diatement la question du <strong>d\u00e9terminisme<\/strong>, est ce que ca veut dire que notre monde n\u2019est pas d\u00e9terministe ? Est-ce que du coup on doit finalement donner raison \u00e0 <strong><a href=\"https:\/\/lignesdorages.com\/index.php\/2016\/12\/06\/top-7-des-philosophes-antiques-qui-tabassent-le-4eme-va-choquer-ta-maman\/\">la vision d\u2019\u00e9picure sur celle des sto\u00efciens ?<\/a><\/strong> (Evidemment ces physiques n\u2019ont pas \u00e9t\u00e9 faites pour r\u00e9pondre \u00e0 des questions physiques mais pour servir d\u2019exercices mentaux et de guides de vie, m\u2019enfin c\u2019est rigolo quand m\u00eame).<\/p>\n<h2>D\u00e9terminisme sto\u00efcien<\/h2>\n<p>Evidemment m\u00eame si les exp\u00e9riences de physique quantiques ont pu pousser tr\u00e8s loin et m\u00eame repousser la limite de la m\u00e9taphysique, il y a toujours (et tant mieux)<strong> une limite \u00e0 la physique qui permet d\u2019avoir plusieurs interpr\u00e9tations m\u00e9taphysiques possibles.<\/strong><\/p>\n<p>On peut donc imaginer la r\u00e9ponse d\u2019un stoicien, qui r\u00e9pondra sans doute que le monde est d\u00e9terministe malgr\u00e9 tout et que le pneuma est une variable cach\u00e9e non locale. <\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"419\" data-permalink=\"https:\/\/lignesdorages.com\/index.php\/2017\/01\/27\/petit-voyage-dans-le-monde-des-quanta-etienne-klein\/the-force\/\" data-orig-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/the-force.gif?fit=500%2C300&amp;ssl=1\" data-orig-size=\"500,300\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"the force\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/the-force.gif?fit=500%2C300&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/the-force.gif?resize=500%2C300&#038;ssl=1\" alt=\"\" width=\"500\" height=\"300\" class=\"aligncenter size-full wp-image-419\" \/><\/p>\n<h2>pour revenir au livre<\/h2>\n<p>Bref les diff\u00e9rentes interpr\u00e9tations possibles de la physique quantique sont vraiment rigolote, et pour revenir au livre, c\u2019est un peu sa faiblesse finale. Dans le dernier chapitre qui est consacr\u00e9 \u00e0 cette question de l\u2019interpr\u00e9tation, l\u2019auteur nous <strong>nomme les interpr\u00e9tations possibles<\/strong> (th\u00e8se du r\u00e9el voil\u00e9, solipsisme convivial, r\u00e9alisme physique, r\u00e9alisme ouvert, op\u00e9rationnalisme, ph\u00e9nom\u00e9nalisme, id\u00e9alisme radical et id\u00e9alisme mod\u00e9r\u00e9) mais ne les d\u00e9cris pas du tout, ne serait-ce qu\u2019en une phrase. \ud83d\ude41<\/p>\n<p>Perso je suis rest\u00e9 sur ma faim, j\u2019aurai vraiment aim\u00e9 un petit topo rapide sur les diff\u00e9rentes visions possibles : pour le plaisir pur de la stimulation intellectuelle d\u2019envisager diff\u00e9rentes r\u00e9alit\u00e9 possibles. Et \u00e9videmment\u2026 sans jamais vraiment trancher entre les diff\u00e9rentes interpr\u00e9tations possibles pour rester dans un \u00e9tat d\u2019indetermination, un \u00e9tat superpos\u00e9.  <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aujourd\u2019hui on va parler de <strong>physique quantique<\/strong>. Comme souvent ici en rapport direct avec une de mes lectures r\u00e9centes (il appara\u00eet \u00e0 peu pr\u00e8s clair maintenant que ce blog va \u00e0 quelques exceptions pr\u00e8s se concentrer sur ce type d\u2019articles qui sont en quelque sorte des fiches de lectures). <\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/shrodingers-cat.png\" alt=\"\" width=\"601\" height=\"599\" class=\"aligncenter size-full wp-image-402\" srcset=\"https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/shrodingers-cat.png?w=601&amp;ssl=1 601w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/shrodingers-cat.png?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/shrodingers-cat.png?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/lignesdorages.com\/wp-content\/uploads\/2017\/01\/shrodingers-cat.png?resize=271%2C270&amp;ssl=1 271w\" sizes=\"auto, (max-width: 601px) 100vw, 601px\" \/><\/p>\n<p><strong><a href=\"http:\/\/wp.me\/p7tYAm-6q\">[clic pour lire plus&#8230;]<\/a><\/strong><\/p>\n","protected":false},"author":2,"featured_media":0,"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":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3],"tags":[11,25,9,5],"class_list":["post-398","post","type-post","status-publish","format-standard","hentry","category-liens","tag-livre","tag-philosophie","tag-politique","tag-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Petit voyage dans le monde des quanta - Etienne Klein - Lignes d&#039;Orages<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lignesdorages.com\/index.php\/2017\/01\/27\/petit-voyage-dans-le-monde-des-quanta-etienne-klein\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Petit voyage dans le monde des quanta - Etienne Klein - Lignes d&#039;Orages\" \/>\n<meta property=\"og:description\" content=\"Aujourd\u2019hui on va parler de physique quantique. 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