1 files changed, 24 insertions, 0 deletions
diff --git a/3768/CH4/EX4.7/Ex4_7.sce b/3768/CH4/EX4.7/Ex4_7.sce
new file mode 100644
index 000000000..e675bfe57
--- /dev/null
+++ b/3768/CH4/EX4.7/Ex4_7.sce
@@ -0,0 +1,24 @@
+//Example number 4.7, Page number 68
+
+clc;clear;
+close;
+
+//Variable declaration
+n=1;   //order
+h=1;
+k=1;
+l=1;
+e=1.6*10**-19;    //charge(c)
+theta=27.5;    //angle(degree)
+H=6.625*10**-34;    //plancks constant
+c=3*10**10;    //velocity of light(m)
+a=5.63*10**-10;     //lattice constant(m)
+//Calculation
+theta=theta*%pi/180;    //angle(radian)
+d=a/sqrt(h**2+k**2+l**2);
+lamda=2*d*sin(theta)/n;      //wavelength of Xray beam(m)
+E=H*c/(e*lamda);           //energy of Xray beam(eV)         
+//Result
+printf("wavelength of X-ray beam is %.f Angstrom",int32(lamda*10**10))
+printf("\n energy of Xray beam is %.2e eV",E)
+//answer in the book is wrong