1 files changed, 20 insertions, 0 deletions
diff --git a/3755/CH3/EX3.13/Ex3_13.sce b/3755/CH3/EX3.13/Ex3_13.sce
new file mode 100644
index 000000000..2de61fada
--- /dev/null
+++ b/3755/CH3/EX3.13/Ex3_13.sce
@@ -0,0 +1,20 @@
+clear
+//
+//
+//
+
+//Variable declaration
+h=6.62*10^-34;      //planck's constant(J sec)
+e=1.6*10^-19;       //charge(coulomb)
+m=9*10^-31;        //mass(kg) 
+E=344;     //energy(volts)
+n=1;
+theta=60;   //angle(degrees)
+
+//Calculation
+lamda=h/sqrt(2*m*e*E);       //wavelength(m)
+theta=theta*%pi/180;    //angle(radian)
+d=n*lamda*10^10/(2*sin(theta));           //spacing of crystal(angstrom)
+
+//Result
+printf("\n spacing of crystal is %0.2f angstrom",d)