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//Example 4_14
clc();
clear;
//To determine the space of the reflecting plane and the volume of the unit cell
lemda=3*10^-10 //units in meters
theta=40 //units in degrees
h=1
k=0
l=0
n=1
d=(n*lemda)/(2*sin(theta*%pi/180))*10^10
printf("The space of the reflecting plane is %.3f angstrom",d)
v=(d*sqrt(h^2+k^2+l^2)*10^-10)^3
printf("\n\nThe volume of the unit cell is %.33f m^3",v)
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