{"id":1812,"date":"2024-04-24T17:57:42","date_gmt":"2024-04-24T16:03:03","guid":{"rendered":"https:\/\/experiments.school\/?post_type=product&p=1812"},"modified":"2024-05-07T15:12:29","modified_gmt":"2024-05-07T13:12:29","slug":"168-interference-avec-la-lumiere-laser","status":"publish","type":"product","link":"https:\/\/experiments.school\/fr\/produkt\/168-interference-avec-la-lumiere-laser\/","title":{"rendered":"168 \u2013 Interf\u00e9rence au niveau de la double fente\u00a0\u00a0"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"

Interf\u00e9rence avec la lumi\u00e8re laser<\/strong><\/h2>\n

\u00a0<\/span><\/p>\n

Introduction \u00e0 :\u00a0<\/span>\u00a0<\/span><\/h2>\n
    \n
  • Interf\u00e9rence\u00a0<\/span>\u00a0<\/span><\/li>\n
  • Lumi\u00e8re monochromatique\u00a0<\/span>\u00a0<\/span><\/li>\n<\/ul>\n[video width=\"1080\" height=\"1080\" mp4=\"https:\/\/experiments.school\/wp-content\/uploads\/2024\/04\/168-video-end.mp4\"][\/video]\n

     <\/p>\n

    Mat\u00e9riel:<\/span>\u00a0<\/span><\/h2>\n
      \n
    • Pointeur laser\u00a0\u00a0<\/span>\u00a0<\/span><\/li>\n
    • Lunettes de protection laser\u00a0<\/span>\u00a0<\/span><\/li>\n
    • Couteau tranchant\u00a0<\/span>\u00a0<\/span><\/li>\n
    • Mat\u00e9riel de fixation (pinces \u00e0 linge \/ trombones \/ ruban adh\u00e9sif)\u00a0<\/span>\u00a0<\/span><\/li>\n
    • Papier \u00e9pais (p. ex. papier de construction, env. 7 cm x 20 cm, env. 130-200 g\/m\u00b2)\u00a0<\/span>\u00a0<\/span><\/li>\n
    • R\u00e8gle\u00a0\u00a0<\/span>\u00a0<\/span><\/li>\n
    • Support pour laser (\u00e9ventuellement r\u00e9glable en hauteur)\u00a0<\/span>\u00a0<\/span><\/li>\n
    • Surface de coupe (dure, stable)\u00a0<\/span>\u00a0<\/span><\/li>\n
    • Feuille de papier blanc\u00a0<\/span>\u00a0<\/span><\/li>\n<\/ul>\n

      Instructions:<\/span>\u00a0<\/span><\/h2>\n
        \n
      • D\u00e9coupez une fente droite dans le papier de bricolage \u00e0 l\u2019aide du couteau et de la r\u00e8gle.\u00a0\u00a0<\/span>\u00a0<\/span><\/li>\n
      • La largeur de la fente doit \u00eatre d\u2019environ 0,1 mm.\u00a0<\/span>\u00a0<\/span><\/li>\n
      • D\u00e9coupez une deuxi\u00e8me fente parall\u00e8le \u00e0 la premi\u00e8re. Choisissez une distance entre les fentes d\u2019environ 1 \u00e0 1,5 mm.<\/span>\u00a0<\/span><\/li>\n
      • Fixez le papier \u00e0 la r\u00e8gle avec le mat\u00e9riau de fixation et placez-le \u00e0 une distance d\u2019environ 2 m d\u2019un mur.\u00a0<\/span>\u00a0<\/span><\/li>\n
      • Installez le laser de mani\u00e8re \u00e0 ce que le faisceau laser frappe l\u2019espace dans le papier de construction directement \u00e0 une distance d\u2019environ 15 cm.\u00a0<\/span>\u00a0<\/span><\/li>\n
      • Utilisez toujours les lunettes de s\u00e9curit\u00e9.\u00a0<\/span>\u00a0<\/span><\/li>\n
      • Fixez la feuille de papier comme \u00e9cran au point o\u00f9 le faisceau lumineux frappe le mur.\u00a0<\/span>\u00a0<\/span><\/li>\n
      • Assombrissez la pi\u00e8ce.\u00a0<\/span>\u00a0<\/span><\/li>\n<\/ul>\n

        Observation:\u00a0<\/span>\u00a0<\/span><\/h2>\n
          \n
        • Le point lumineux sur l\u2019\u00e9cran n\u2019est pas en forme de point, mais allong\u00e9 dans la direction perpendiculaire aux colonnes. Il y a des taches sombres dedans.\u00a0<\/span>\u00a0<\/span><\/li>\n<\/ul>\n

          Explication:\u00a0<\/span>\u00a0<\/span><\/h2>\n
            \n
          • La lumi\u00e8re est diffract\u00e9e sur les bords des deux colonnes. De plus, les ondes lumineuses traversant les deux fissures interf\u00e8rent. Cela conduit aux taches sombres, les minima de la figure d\u2019interf\u00e9rence.\u00a0<\/span>\u00a0<\/span><\/li>\n<\/ul>\n

            Conseils:<\/span>\u00a0<\/span><\/h2>\n
              \n
            • D\u00e9placez l\u00e9g\u00e8rement le faisceau laser d\u2019avant en arri\u00e8re avec la surface de contact pour obtenir un r\u00e9sultat optimal.<\/span>\u00a0<\/span><\/li>\n<\/ul>\n","protected":false},"featured_media":1814,"template":"","meta":[],"product_brand":[],"product_cat":[970,885],"product_tag":[],"class_list":{"0":"post-1812","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-4-diffraction-interference-fr","7":"product_cat-c-optique-fr","8":"","9":"woocommerce-text-align-left","10":"woocommerce-image-align-center","12":"first","13":"instock","14":"shipping-taxable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/product\/1812","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/media\/1814"}],"wp:attachment":[{"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/media?parent=1812"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/product_brand?post=1812"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/product_cat?post=1812"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/product_tag?post=1812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}