{"id":46069,"date":"2019-10-20T19:26:18","date_gmt":"2019-10-20T18:26:18","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/quest-ce-que-lechelle-celsius-temperature-celsius-definition\/"},"modified":"2020-02-26T13:47:02","modified_gmt":"2020-02-26T12:47:02","slug":"quest-ce-que-lechelle-celsius-temperature-celsius-definition","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lechelle-celsius-temperature-celsius-definition\/","title":{"rendered":"Qu&#8217;est-ce que l&#8217;\u00e9chelle Celsius &#8211; Temp\u00e9rature Celsius &#8211; D\u00e9finition"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">\u00c9chelle Celsius.\u00a0L&#8217;\u00e9chelle de temp\u00e9rature Celsius est \u00e9galement appel\u00e9e \u00e9chelle de temp\u00e9rature centigrade en raison de l&#8217;intervalle de 100 degr\u00e9s entre les points d\u00e9finis.\u00a0le<\/div>\n<\/div>\n<div class=\"su-divider su-divider-style-dotted\"><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2>\u00c9chelles de temp\u00e9rature<\/h2>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/comparison-temperature-scales-min.png\"><img loading=\"lazy\" class=\"wp-image-16243 alignright lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/comparison-temperature-scales-min.png\" alt=\"Conversion de temp\u00e9rature - Fahrenheit - Celsius\" width=\"400\" height=\"318\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/comparison-temperature-scales-min.png\" \/><\/a>Lors de l&#8217;utilisation d&#8217;un thermom\u00e8tre, nous devons marquer une \u00e9chelle sur la paroi du tube avec des chiffres.\u00a0Nous devons d\u00e9finir une\u00a0<strong>\u00e9chelle de temp\u00e9rature<\/strong>\u00a0.\u00a0Une\u00a0<strong><em>\u00e9chelle de temp\u00e9rature<\/em><\/strong>\u00a0est un moyen de mesurer la temp\u00e9rature par rapport \u00e0 un\u00a0<strong>point de d\u00e9part<\/strong>\u00a0(0 ou z\u00e9ro) et \u00e0 une\u00a0<strong>unit\u00e9 de mesure<\/strong>\u00a0.<\/p>\n<p>Ces chiffres sont arbitraires et, historiquement, de nombreux syst\u00e8mes diff\u00e9rents ont \u00e9t\u00e9 utilis\u00e9s.\u00a0Par exemple, cela a \u00e9t\u00e9 r\u00e9alis\u00e9 en d\u00e9finissant certaines occurrences physiques \u00e0 des temp\u00e9ratures donn\u00e9es, telles que les\u00a0<strong><a title=\"Saturation \u2013 Boiling Point\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-la-saturation-point-debullition-definition\/\">points de<\/a><\/strong><strong>\u00a0cong\u00e9lation<\/strong>\u00a0et d\u2019\u00a0<strong><a title=\"Saturation - Point d'\u00e9bullition\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-la-saturation-point-debullition-definition\/\">\u00e9bullition de l\u2019eau<\/a>\u00a0<\/strong>\u00a0, et en les d\u00e9finissant respectivement \u00e0 0 et 100.<\/p>\n<p>Il existe plusieurs \u00e9chelles et unit\u00e9s pour mesurer la temp\u00e9rature.\u00a0Les plus courants sont:<\/p>\n<ul>\n<li><a title=\"\u00c9chelle Celsius - Temp\u00e9rature Celsius\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/thermodynamic-properties\/what-is-temperature-physics\/celsius-scale-celsius-temperature\/\">Celsius (not\u00e9 \u00b0 C),<\/a><\/li>\n<li><a title=\"\u00c9chelle Fahrenheit - Temp\u00e9rature Fahrenheit\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/thermodynamic-properties\/what-is-temperature-physics\/fahrenheit-scale-fahrenheit-temperature\/\">Fahrenheit (not\u00e9 \u00b0 F),<\/a><\/li>\n<li><a title=\"\u00c9chelle Kelvin - Temp\u00e9rature absolue\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/thermodynamics\/thermodynamic-properties\/what-is-temperature-physics\/kelvin-scale-absolute-temperature\/\">Kelvin (not\u00e9 K; surtout en science).<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2>\u00c9chelle Celsius &#8211; Temp\u00e9rature Celsius<\/h2>\n<figure id=\"attachment_16241\" class=\"wp-caption alignright\" aria-describedby=\"caption-attachment-16241\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Celsius-temperature-scale-min.png\"><img loading=\"lazy\" class=\"size-full wp-image-16241 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Celsius-temperature-scale-min.png\" alt=\"\u00c9chelle de temp\u00e9rature Celsius\" width=\"321\" height=\"508\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Celsius-temperature-scale-min.png\" \/><\/a><figcaption id=\"caption-attachment-16241\" class=\"wp-caption-text\">L&#8217;\u00e9chelle de temp\u00e9rature Celsius est bas\u00e9e sur deux points: le point d&#8217;\u00e9bullition de l&#8217;eau \u00e0 100 \u00b0 C et le point de cong\u00e9lation de l&#8217;eau \u00e0 0 \u00b0 C.<\/figcaption><\/figure>\n<p>Environ 20 ans apr\u00e8s que Fahrenheit ait propos\u00e9 son \u00e9chelle de temp\u00e9rature pour thermom\u00e8tre, le professeur su\u00e9dois\u00a0<strong>Anders Celsius a<\/strong>\u00a0d\u00e9fini une meilleure \u00e9chelle pour mesurer la temp\u00e9rature.\u00a0Il a\u00a0propos\u00e9 d&#8217;\u00a0utiliser le\u00a0<a title=\"Saturation - Point d'\u00e9bullition\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-la-saturation-point-debullition-definition\/\"><strong>point d&#8217;\u00e9bullition de l&#8217;\u00a0eau<\/strong><\/a>\u00a0comme\u00a0<strong>100 \u00b0 C<\/strong>\u00a0et le\u00a0<strong>point de cong\u00e9lation de l&#8217;\u00a0eau<\/strong>\u00a0comme\u00a0<strong>0 \u00b0 C<\/strong>\u00a0.\u00a0L&#8217;eau a \u00e9t\u00e9 choisie comme mat\u00e9riau de r\u00e9f\u00e9rence car elle \u00e9tait toujours disponible dans la plupart des laboratoires du monde entier.<\/p>\n<p><strong>L&#8217;\u00e9chelle de temp\u00e9rature Celsius<\/strong>\u00a0est \u00e9galement appel\u00e9e\u00a0<strong>\u00e9chelle de temp\u00e9rature centigrade en<\/strong>\u00a0\u00a0raison de l&#8217;\u00a0intervalle de\u00a0<strong>100 degr\u00e9s<\/strong>\u00a0entre les points d\u00e9finis.\u00a0La temp\u00e9rature en degr\u00e9s Celsius pour un \u00e9tat plus froid que l&#8217;eau glac\u00e9e est un nombre n\u00e9gatif.\u00a0L&#8217;\u00e9chelle Celsius est utilis\u00e9e, dans la vie quotidienne comme dans la science et l&#8217;industrie, presque partout dans le monde.<\/p>\n<p><strong><span>Le z\u00e9ro absolu<\/span><\/strong><span>\u00a0, la temp\u00e9rature la plus basse possible, est d\u00e9fini comme \u00e9tant pr\u00e9cis\u00e9ment 0 K et \u2212273,15 \u00b0 C.\u00a0La temp\u00e9rature du\u00a0<\/span><a title=\"Triple point d'eau\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-nuclear-engineering\/properties-of-water\/triple-point-of-water\/\"><strong><span>point triple de l&#8217;eau<\/span><\/strong><\/a><span>\u00a0est d\u00e9finie comme \u00e9tant pr\u00e9cis\u00e9ment 273,16 K et 0,01 \u00b0 C.\u00a0Cette d\u00e9finition fixe la magnitude du degr\u00e9 Celsius et du kelvin comme pr\u00e9cis\u00e9ment 1 partie sur 273.16 de la diff\u00e9rence entre le z\u00e9ro absolu et le point triple de l&#8217;eau.<\/span><\/p>\n<p><span>Il faut ajouter, par accord international, que l&#8217;unit\u00e9 \u00abdegr\u00e9 Celsius\u00bb et l&#8217;\u00e9chelle Celsius sont actuellement d\u00e9finies par deux points diff\u00e9rents:\u00a0<\/span><strong><span>le z\u00e9ro absolu<\/span><\/strong><span>\u00a0et le\u00a0<\/span><strong><span>point triple de l&#8217;eau<\/span><\/strong><span>\u00a0(au lieu des points d&#8217;\u00e9bullition et de cong\u00e9lation).\u00a0Cette d\u00e9finition relie \u00e9galement pr\u00e9cis\u00e9ment l&#8217;\u00e9chelle Celsius \u00e0 l&#8217;\u00e9chelle Kelvin, qui d\u00e9finit l&#8217;unit\u00e9 de base SI de la temp\u00e9rature thermodynamique.<\/span><\/p>\n<p><strong><span>Conversion de temp\u00e9rature &#8211; Fahrenheit &#8211; Celsius<\/span><\/strong><\/p>\n<p><span>Pour convertir d&#8217;une\u00a0<\/span><strong><span>temp\u00e9rature Fahrenheit<\/span><\/strong><span>\u00a0\u00e0 une\u00a0<\/span><strong><span>temp\u00e9rature Celsius,<\/span><\/strong><span>\u00a0nous devons soustraire\u00a0<\/span><strong><span>32 degr\u00e9s<\/span><\/strong><span>\u00a0de la lecture Fahrenheit pour atteindre le point z\u00e9ro sur l&#8217;\u00e9chelle Celsius, puis ajuster pour les diff\u00e9rents degr\u00e9s de taille.\u00a0Le rapport de la taille des degr\u00e9s est de\u00a0<\/span><strong><span>5\/9 de<\/span><\/strong><span>\u00a0sorte que la relation entre les \u00e9chelles est repr\u00e9sent\u00e9e par les \u00e9quations suivantes:<\/span><\/p>\n<p><strong><span>\u00b0 F = 32,0 + (9\/5) \u00b0 C<\/span><\/strong><br \/>\n<strong><span>\u00b0 C = (\u00b0 F &#8211; 32,0) (5\/9)<\/span><\/strong><\/p>\n<\/div>\n<\/div>\n<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.<\/p>\n<p>Cet article est bas\u00e9 sur la traduction automatique de l&#8217;article original en anglais. Pour plus d&#8217;informations, voir l&#8217;article en anglais. Pouvez vous nous aider Si vous souhaitez corriger la traduction, envoyez-la \u00e0 l&#8217;adresse: translations@nuclear-power.com ou remplissez le formulaire de traduction en ligne. Nous appr\u00e9cions votre aide, nous mettrons \u00e0 jour la traduction le plus rapidement possible. Merci<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c9chelle Celsius.\u00a0L&#8217;\u00e9chelle de temp\u00e9rature Celsius est \u00e9galement appel\u00e9e \u00e9chelle de temp\u00e9rature centigrade en raison de l&#8217;intervalle de 100 degr\u00e9s entre les points d\u00e9finis.\u00a0le \u00c9chelles de temp\u00e9rature Lors de l&#8217;utilisation d&#8217;un thermom\u00e8tre, nous devons marquer une \u00e9chelle sur la paroi du tube avec des chiffres.\u00a0Nous devons d\u00e9finir une\u00a0\u00e9chelle de temp\u00e9rature\u00a0.\u00a0Une\u00a0\u00e9chelle de temp\u00e9rature\u00a0est un moyen de mesurer &#8230; <a title=\"Qu&#8217;est-ce que l&#8217;\u00e9chelle Celsius &#8211; Temp\u00e9rature Celsius &#8211; D\u00e9finition\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lechelle-celsius-temperature-celsius-definition\/\" aria-label=\"En savoir plus sur Qu&#8217;est-ce que l&#8217;\u00e9chelle Celsius &#8211; Temp\u00e9rature Celsius &#8211; D\u00e9finition\">Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qu&#039;est-ce que l&#039;\u00e9chelle Celsius - Temp\u00e9rature Celsius - D\u00e9finition<\/title>\n<meta name=\"description\" content=\"\u00c9chelle Celsius. 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