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//Example 5_6_u1
clc();
clear;
//To calculate the interplanar spacing and wavelength
n1=1
theta1=23 //units in degrees
n2=3
theta2=60 //units in degrees
lamda1=97 //units in pm
lamda2=(n2*lamda1*sin(theta1*(%pi/180)))/(sin(theta2*(%pi/180))) //units in pm
d=(n2*lamda1)/(2*sin(theta2*(%pi/180))) //units in pm
printf("Wavelength lamda=%dpm \n Interplanar spacing d=%dpm",lamda2,d)
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