1 files changed, 24 insertions, 0 deletions
diff --git a/3840/CH3/EX3.9/Ex3_9.sce b/3840/CH3/EX3.9/Ex3_9.sce
new file mode 100644
index 000000000..36f6d2d54
--- /dev/null
+++ b/3840/CH3/EX3.9/Ex3_9.sce
@@ -0,0 +1,24 @@
+clear
+//
+//
+//
+
+//Variable declaration
+a=0.26         //lattice spacing(nm)
+lamda=0.065    //wavelength of X-rays(nm)
+h=1
+k=1
+l=0
+n=2
+
+//Calculation
+d=a/sqrt(h**2+k**2+l**2)           
+sintheta=n*lamda/(2*d)
+theta=asin(sintheta)*180/%pi            //glancing angle(degrees)
+thetad=int(theta)                               //glancing angle(degrees)  
+thetam=(theta-thetad)*60                        //glancing angle(minutes)
+thetas=60*(thetam-int(thetam))                  //glancing angle(seconds)
+
+//Result
+printf("\n glancing angle is %0.3f degrees %0.3f minutes %0.3f seconds",thetad,thetam,thetas)
+printf("\n answer in the book is wrong")