blob: 7cff022d1e8590f6d81f13b0c7b1f2b42f560c64 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
// Scilab Code Ex4.6 : Page-93 (2010)
n = 1; // Order of diffraction spectrum
N = 6000e+02; // Number of lines per m on diffraction grating, per m
D = 2; // Distance of screen from the source, m
lambda1 = 400e-009; // Wavelength of blue light, m
// We have sin(theta1) = n*N*lambda, solving for theta1
theta1 = asind(n*N*lambda1); // Angle at first order diffraction for Blue light, degrees
lambda2 = 750e-009; // Wavelength of blue light, m
// We have sin(theta2) = n*N*lambda, solving for theta2
theta2 = asind(n*N*lambda2); // Angle at first order diffraction for Red light, degrees
x1 = D*tand(theta1); // Half width position at central maximum for blue color, m
x2 = D*tand(theta2); // Half width position at central maximum for red color, m
printf("\nThe width of first order spectrum on the screen = %4.1f cm", (x2 - x1)/1e-02);
// Result
// The width of first order spectrum on the screen = 51.3 cm
|
