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// Scilab Code Ex2.31:: Page-2.22 (2009)
clc; clear;
mu1 = 1.55; // Refractive index of mica
mu2 = 1.52; // Refractive index of glass
t = 0.75e-003; // Thickness of the sheets, m
d = 0.25e-02; // Separation between the slits, m
lambda = 5896e-010; // Wavelength of light used, m
D = 1.5; // Distance between the source ans the slits, m
// Fringe width
b = lambda*D/d; // Fringe width, m
// Optical path difference
delta_x = (mu1-1)*t-(mu2-1)*t; // Optical path change, m
printf("\nThe fringe width = %3.1e m", b);
printf("\nThe optical path change = %5.3e m", delta_x);
// Result
// The fringe width = 3.5e-004 m
// The optical path change = 2.250e-005 m
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