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//Chapter-2,Example2_6_1,pg 2-31
wavelength_1=5893*10^-10 //wavelength of light
wavelength_2=5896*10^-10 //wavelength of light
m=2 //for second order
N1=3000*10^2/0.5 //Number of lines per meter
angle_1=asind(m*wavelength_1*N1) //for wavelength_1
angle_2=asind(m*wavelength_2*N1) //for wavelength_2
angle_sep=angle_2-angle_1
printf('\nangular seperation is %.4f degrees \n',angle_sep)
d_wavelength=3*10^-10
N=wavelength_1/(m*d_wavelength)
printf('\n The number of lines per meter is N = %.0f\n ',N)
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