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//Chapter 2 : Diffraction
clear;
//Variable declaration
theta=(30*%pi/180) //angle in radians
lamda1=5400*10**-10
n=3 //third order
//Calculations
d=(n*lamda1)/sin(theta)*10**2/10**-4
N1=1/d/10**-1*10**3
//Result
mprintf("Grating element= %.2f*10**-4 cm",d)
mprintf("\nNumber of lines in 1 cm length of grating= %d",N1)
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