1 files changed, 19 insertions, 0 deletions
diff --git a/3869/CH7/EX7.12/Ex7_12.sce b/3869/CH7/EX7.12/Ex7_12.sce
new file mode 100644
index 000000000..f9fa25671
--- /dev/null
+++ b/3869/CH7/EX7.12/Ex7_12.sce
@@ -0,0 +1,19 @@
+clear
+//
+//
+//
+
+//Variable declaration
+lamda=1.54*10**-10         //wavelength(m)
+n=1                        //order
+theta=19.2*%pi/180     //glancing angle(radian)
+h=1
+k=1
+l=1
+
+//Calculation
+d=n*lamda/(2*sin(theta))     
+a=d*sqrt(h**2+k**2+l**2)     //cube edge of unit cell(m)
+
+//Result
+printf("\n cube edge of unit cell is %0.3f  *10**-10 m",a*10**10)