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//Chapter 2 : Diffraction
clear;
//Variable declaration
lamda=6.5*10**-7 //wavelength
n=1 //first order
theta=(15*%pi/180) //angle in radians
//Calculations
d=(n*lamda)/sin(theta)/10**-6
//Result
mprintf("Grating element= %.3f*10**-6 m",d)
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