File:Fentes de young profil intensite.png
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Fentes_de_young_profil_intensite.png (610 × 461 pixels, file size: 3 KB, MIME type: image/png)
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[edit]Profil d'intensité avec des fentes de Young ; conditions :
- distance entre les fentes : d = 0,5 µm ;
- longueur d'onde : λ = 630 nm (rouge) ;
- distance fentes-écran : D = 1 m ;
- A = λ · D / d = 1,26 m ;
- B = λ · D / a = 126 m ;
Intensity profile with Young double-slits; conditions :
- distance between the slits : d = 0.5 µm ;
- wavelength : λ = 630 nm (red) ;
- distance slits-screen : D = 1 m ;
- A = λ · D / d = 1.26 m.
- B = λ · D / a = 126 m ;
Auteur/author : Christophe Dang Ngoc chan (cdang)
Réalisé avec/made with Scilab
clear;clf;
// constantes
d = 5e-7; // distance entre les fentes en m D=1; // distance fentes/écran en m lambda=6.3e-7; // longueur d'onde en m (rouge) A=(lambda*D)/d; // pseudo-longueur d'onde de la figure de diffraction a = 5e-8; B = (lambda*D)/a; // fonction deff('y=I(x)','y=(cos(%pi*x/A))^2') deff('y=I1(x)','y=1/(D^2+ x^2)') // décroissance circulaire deff('y=I2(x)','y=(sin(%pi*x/B)*B/(%pi*x))^2') // diffraction par chaque fente // valeurs X=[0:0.01:10]'; NX = size(X); nx=NX(1,1); Y=feval(X,I); Y1=feval(X,I1); Y2(1)=1; Y2(2:nx)=feval(X(2:nx),I2); Y3 = Y.*Y1.*Y2;
// tracé plot2d(X,Y3,style=color('red')) plot2d(-X,Y3,style=color('red')) xtitle('Diffraction par des fentes de Young','x','I (4E0^2)')
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[edit]Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | ||
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:51, 19 December 2005 | 610 × 461 (3 KB) | Cdang (talk | contribs) | decrease due to diffraction by each slit | |
13:54, 19 December 2005 | 610 × 461 (3 KB) | Cdang (talk | contribs) | Profil d'intensité avec des fentes de Young ---- Intensity profile with Young double-slits Auteur/author : Christophe Dang Ngoc chan (user:cdang) Réalisé avec/made with [http://www.scilab.org/ Scilab] category:Diffraction [[category:Interf |
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