2 files changed, 43 insertions, 93 deletions
diff --git a/2438/CH1/EX1.13/Ex1_13.sce b/2438/CH1/EX1.13/Ex1_13.sce
index 8125e5247..4f1fc7232 100755
--- a/2438/CH1/EX1.13/Ex1_13.sce
+++ b/2438/CH1/EX1.13/Ex1_13.sce
@@ -1,23 +1,23 @@
-//======================================================================
-// chapter 1 example 13
-
-clc;
-clear;
-
-
-//input data
- lamda      = 2;                     //wavelength in angstroms
- theta1     = 60;                    //angle in degrees
- n          = 1;
- 
-//formula
-//2*d*sin(theta)=n*lamda;
-
-//calculation
- d  = (n*lamda)/(2*sin(theta1*%pi/180));
-
-//result
-
-mprintf('lattice constant=%3.4f Å\n',d);
-mprint('Note:calulation mistake in textbook)
-//======================================================================
+//======================================================================
+// chapter 1 example 13
+
+clc;
+clear;
+
+
+//input data
+ lamda      = 2;                     //wavelength in angstroms
+ theta1     = 60;                    //angle in degrees
+ n          = 1;
+ 
+//formula
+//2*d*sin(theta)=n*lamda;
+
+//calculation
+ d  = (n*lamda)/(2*sin(theta1*%pi/180));
+
+//result
+
+mprintf('lattice constant=%3.4f Å\n',d);
+mprintf('Note: calculation mistake in textbook')
+//======================================================================
+\ No newline at end of file
diff --git a/2438/CH6/EX6.20/Ex6_20.sce b/2438/CH6/EX6.20/Ex6_20.sce
index 3768f1ed4..b430f3122 100755
--- a/2438/CH6/EX6.20/Ex6_20.sce
+++ b/2438/CH6/EX6.20/Ex6_20.sce
@@ -1,70 +1,20 @@
-// chapter 6 example 2o
-
-clc;
-clear;
-
-
-//input data
- n  = 3.0*10^28;       //number of electrons per m^3
- t   = 3*10^-14;     //time in s
- m   = 9.1*10^-31;    //mass of electron in kg
- L   = 2.44*10^-8;       //lorentz number in ohm W/K^2
- T  = 330;          //temperature in kelvin 
- e   = 1.6*10^-19;       //charge of electron
-
-
-//calculation
- sigma  = n*e^2*t/m;    //electrical conductivity in (ohm-m)^-1
- 
-//result
- mprintf('electrial conductivity=%3.2e.(ohm-m)^-1\n',sigma);
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+// chapter 6 example 2o
+
+clc;
+clear;
+
+
+//input data
+ n  = 3.0*10^28;       //number of electrons per m^3
+ t   = 3*10^-14;     //time in s
+ m   = 9.1*10^-31;    //mass of electron in kg
+ L   = 2.44*10^-8;       //lorentz number in ohm W/K^2
+ T  = 330;          //temperature in kelvin 
+ e   = 1.6*10^-19;       //charge of electron
+
+
+//calculation
+ sigma  = n*e^2*t/m;    //electrical conductivity in (ohm-m)^-1
+ 
+//result
+ mprintf('electrial conductivity=%3.2e.(ohm-m)^-1\n',sigma);
+\ No newline at end of file