{"id":1595,"date":"2024-08-18T20:18:13","date_gmt":"2024-08-18T18:18:13","guid":{"rendered":"https:\/\/rimoldini.org\/musique\/son\/rayonnement-thermique\/"},"modified":"2026-06-14T13:58:38","modified_gmt":"2026-06-14T11:58:38","slug":"rayonnement-thermique","status":"publish","type":"page","link":"https:\/\/rimoldini.org\/fr\/musique\/son\/rayonnement-thermique\/","title":{"rendered":"Rayonnement thermique"},"content":{"rendered":"<p><script>\ndocument.addEventListener('DOMContentLoaded', function() {\n  var imageLinks = document.querySelectorAll('.image-link');<\/p>\n<p>  imageLinks.forEach(function(link) {\n    link.addEventListener('mouseover', function() {\n      var preview = this.querySelector('.image-preview');\n      preview.style.display = 'block';\n    });<\/p>\n<p>    link.addEventListener('mouseout', function() {\n      var preview = this.querySelector('.image-preview');\n      preview.style.display = 'none';\n    });\n  });\n});\n<\/script><\/p>\n<h3>Le son du rayonnement thermique<\/h3>\n&#13;\n<p>Comme illustr\u00e9 pour les courbes de lumi\u00e8re des <a href=\"https:\/\/rimoldini.org\/music\/sound\/variable-stars\/#page-content\" target=\"_self\" rel=\"noopener\">\u00e9toiles variables p\u00e9riodiques<\/a>, d\u00e9pourvues de variations irr\u00e9guli\u00e8res ou stochastiques, elles peuvent \u00eatre d\u00e9crites par un ensemble de fr\u00e9quences <strong>discr\u00e8tes<\/strong>, telles que les fr\u00e9quences fondamentales (per\u00e7ues comme la hauteur) et leurs harmoniques (per\u00e7ues comme le timbre).<\/p>&#13;\n<p>Ind\u00e9pendamment des variations de luminosit\u00e9 d\u2019une \u00e9toile, sa lumi\u00e8re est constitu\u00e9e d\u2019un rayonnement \u00e9lectromagn\u00e9tique couvrant un large spectre de fr\u00e9quences, s\u2019\u00e9tendant souvent au-del\u00e0 de la bande limit\u00e9e perceptible par l\u2019\u0153il humain. Ces fr\u00e9quences pr\u00e9sentent une distribution distincte, qui peut \u00eatre approxim\u00e9e par la <a href=\"https:\/\/en.wikipedia.org\/wiki\/Black-body_radiation\" target=\"_blank\" rel=\"noopener\">loi de Planck<\/a>, applicable aux objets rayonnant thermiquement (avec une temp\u00e9rature de surface sup\u00e9rieure au z\u00e9ro absolu, c\u2019est-\u00e0-dire sup\u00e9rieure \u00e0 z\u00e9ro kelvin ou \u2212273,15 \u00b0C ou \u2212459,67 \u00b0F).<\/p>&#13;\n<p>\u00c0 quoi ressemblerait une telle distribution <strong>continue<\/strong> de fr\u00e9quences ? Trop de fr\u00e9quences (semblables \u00e0 une foule de personnes parlant en m\u00eame temps) sont souvent per\u00e7ues comme une forme de bruit. Le bruit peut pr\u00e9senter diverses \u00ab <a href=\"https:\/\/en.wikipedia.org\/wiki\/Colors_of_noise\" target=\"_blank\" rel=\"noopener\">couleurs<\/a> \u00bb en fonction de sa distribution de fr\u00e9quences. Alors, \u00e0 quoi ressemblerait le \u00ab bruit \u00bb du rayonnement thermique ? Explorez les \u00e9chantillons sonores suivants, class\u00e9s par ordre d\u00e9croissant de temp\u00e9rature.<\/p>&#13;\n&#13;\n<section style=\"padding-left: 20px; margin-bottom: 20px;\">&#13;\n&#13;\n<figure class=\"wp-block-audio\">&#13;\n<figcaption class=\"wp-element-caption\"><a href=\"#\" class=\"image-link\" data-image-src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-EN-melting_lead.png\" onclick=\"return false;\">Melting lead (Pb) at 328\u00a0\u00b0C:<div class=\"image-preview\"><img decoding=\"async\" src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-EN-melting_lead.png\" alt=\"Image\"\/><\/div><\/a><\/figcaption>&#13;\n<audio src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-melting_lead.mp3\" controls=\"controls\"><\/audio>&#13;\n<figcaption class=\"wp-element-caption\"><a href=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-melting_lead.mp3\" download=\"\"><button>Download file<\/button><\/a><\/figcaption>&#13;\n<\/figure>&#13;\n&#13;\n<figure class=\"wp-block-audio\">&#13;\n<figcaption class=\"wp-element-caption\"><a href=\"#\" class=\"image-link\" data-image-src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-EN-melting_tin.png\" onclick=\"return false;\">Melting tin (Sn) at 232\u00a0\u00b0C:<div class=\"image-preview\"><img decoding=\"async\" src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-EN-melting_tin.png\" alt=\"Image\"\/><\/div><\/a><\/figcaption>&#13;\n<audio src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-melting_tin.mp3\" controls=\"controls\"><\/audio>&#13;\n<figcaption class=\"wp-element-caption\"><a href=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-melting_tin.mp3\" download=\"\"><button>Download file<\/button><\/a><\/figcaption>&#13;\n<\/figure>&#13;\n&#13;\n<figure class=\"wp-block-audio\">&#13;\n<figcaption class=\"wp-element-caption\"><a href=\"#\" class=\"image-link\" data-image-src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-EN-boiling_water.png\" onclick=\"return false;\">Boiling water (H<sub>2<\/sub>O) at 100\u00a0\u00b0C:<div class=\"image-preview\"><img decoding=\"async\" src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-EN-boiling_water.png\" alt=\"Image\"\/><\/div><\/a><\/figcaption>&#13;\n<audio src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-boiling_water.mp3\" controls=\"controls\"><\/audio>&#13;\n<figcaption class=\"wp-element-caption\"><a href=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-boiling_water.mp3\" download=\"\"><button>Download file<\/button><\/a><\/figcaption>&#13;\n<\/figure>&#13;\n&#13;\n<figure class=\"wp-block-audio\">&#13;\n<figcaption class=\"wp-element-caption\"><a href=\"#\" class=\"image-link\" data-image-src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-EN-melting_ice.png\" onclick=\"return false;\">Melting water ice (H<sub>2<\/sub>O) at 0\u00a0\u00b0C:<div class=\"image-preview\"><img decoding=\"async\" src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-EN-melting_ice.png\" alt=\"Image\"\/><\/div><\/a><\/figcaption>&#13;\n<audio src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-melting_ice.mp3\" controls=\"controls\"><\/audio>&#13;\n<figcaption class=\"wp-element-caption\"><a href=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-melting_ice.mp3\" download=\"\"><button>Download file<\/button><\/a><\/figcaption>&#13;\n<\/figure>&#13;\n&#13;\n<figure class=\"wp-block-audio\">&#13;\n<figcaption class=\"wp-element-caption\"><a href=\"#\" class=\"image-link\" data-image-src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-EN-dry_ice.png\" onclick=\"return false;\">Subliming dry ice (CO<sub>2<\/sub>) at \u221278\u00a0\u00b0C:<div class=\"image-preview\"><img decoding=\"async\" src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-EN-dry_ice.png\" alt=\"Image\"\/><\/div><\/a><\/figcaption>&#13;\n<audio src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-dry_ice.mp3\" controls=\"controls\"><\/audio>&#13;\n<figcaption class=\"wp-element-caption\"><a href=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-dry_ice.mp3\" download=\"\"><button>Download file<\/button><\/a><\/figcaption>&#13;\n<\/figure>&#13;\n&#13;\n<figure class=\"wp-block-audio\">&#13;\n<figcaption class=\"wp-element-caption\"><a href=\"#\" class=\"image-link\" data-image-src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-EN-boiling_nitrogen.png\" onclick=\"return false;\">Boiling nitrogen (N<sub>2<\/sub>) at \u2212196\u00a0\u00b0C:<div class=\"image-preview\"><img decoding=\"async\" src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-EN-boiling_nitrogen.png\" alt=\"Image\"\/><\/div><\/a><\/figcaption>&#13;\n<audio src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-boiling_nitrogen.mp3\" controls=\"controls\"><\/audio>&#13;\n<figcaption class=\"wp-element-caption\"><a href=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/07\/THERMAL-boiling_nitrogen.mp3\" download=\"\"><button>Download file<\/button><\/a><\/figcaption>&#13;\n<\/figure>&#13;\n<\/section>&#13;\n&#13;\n<p style=\"margin-bottom: 20px;\">Les temp\u00e9ratures mentionn\u00e9es ci-dessus, qui d\u00e9clenchent des changements d\u2019\u00e9tat de la mati\u00e8re, sont bas\u00e9es sur une pression d\u2019une atmosph\u00e8re.<\/p>&#13;\n&#13;\n<hr\/>&#13;\n<p>Publi\u00e9 le 27 juillet 2024 | Derni\u00e8re mise \u00e0 jour le 31 juillet 2024 | Ressources sous licence <a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/?ref=chooser-v1\" target=\"_blank\" rel=\"license noopener noreferrer\" style=\"display:inline-block;\">CC BY 4.0 <img decoding=\"async\" style=\"height:22px!important;margin-left:3px;vertical-align:text-bottom;\" src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/08\/cc.png\" alt=\"\"\/><img decoding=\"async\" style=\"height:22px!important;margin-left:3px;vertical-align:text-bottom;\" src=\"https:\/\/rimoldini.org\/wp-content\/uploads\/2024\/08\/by.png\" alt=\"\"\/><\/a> <\/p>","protected":false},"excerpt":{"rendered":"<p>Le son du rayonnement thermique \u2013 Comme illustr\u00e9 pour les courbes de lumi\u00e8re des \u00e9toiles variables p\u00e9riodiques, d\u00e9pourvues de variations irr\u00e9guli\u00e8res ou stochastiques, elles peuvent \u00eatre d\u00e9crites par un ensemble de fr\u00e9quences discr\u00e8tes, telles que les fr\u00e9quences fondamentales (per\u00e7ues comme la hauteur) et leurs harmoniques (per\u00e7ues comme le timbre). Ind\u00e9pendamment des variations de luminosit\u00e9 d\u2019une \u00e9toile, sa lumi\u00e8re est constitu\u00e9e d\u2019un rayonnement \u00e9lectromagn\u00e9tique couvrant un large spectre de fr\u00e9quences, s\u2019\u00e9tendant souvent au-del\u00e0 de la bande limit\u00e9e perceptible par l\u2019\u0153il humain&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1570,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1595","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/rimoldini.org\/fr\/wp-json\/wp\/v2\/pages\/1595","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rimoldini.org\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/rimoldini.org\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/rimoldini.org\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rimoldini.org\/fr\/wp-json\/wp\/v2\/comments?post=1595"}],"version-history":[{"count":1,"href":"https:\/\/rimoldini.org\/fr\/wp-json\/wp\/v2\/pages\/1595\/revisions"}],"predecessor-version":[{"id":1596,"href":"https:\/\/rimoldini.org\/fr\/wp-json\/wp\/v2\/pages\/1595\/revisions\/1596"}],"up":[{"embeddable":true,"href":"https:\/\/rimoldini.org\/fr\/wp-json\/wp\/v2\/pages\/1570"}],"wp:attachment":[{"href":"https:\/\/rimoldini.org\/fr\/wp-json\/wp\/v2\/media?parent=1595"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}