initial commit / add all books

7 files changed, 108 insertions, 0 deletions

diff --git a/2708/CH14/EX14.10/ex_14_10.sce b/2708/CH14/EX14.10/ex_14_10.sce
new file mode 100755
index 000000000..7d305da2c
--- /dev/null
+++ b/2708/CH14/EX14.10/ex_14_10.sce
@@ -0,0 +1,13 @@
+//Example 14.10 // Energy to create defect

+clc;

+clear;

+//given data :

+a=2.82D-10;// interionic distance in m

+T=298;// temperture in kelvin

+k=8.625D-5;// Boltzmann constant eV/k

+n=5D11;// density of defects in per m3

+V=(2*a)^3;//volume of unit cell

+p=4;// no. of ion pairs

+N=p/V;// no. of ion pairs per m3

+E=2*k*T*log(N/n);// energy in eV

+disp(E, "Energy to create defect in eV")

diff --git a/2708/CH14/EX14.11/ex_14_11.sce b/2708/CH14/EX14.11/ex_14_11.sce
new file mode 100755
index 000000000..8b4422743
--- /dev/null
+++ b/2708/CH14/EX14.11/ex_14_11.sce
@@ -0,0 +1,13 @@
+//Example 14.11 // no. of defects

+clc;

+clear;

+//given data :

+k=8.625D-5;// Boltzmann constant eV/k

+E=1.4;// energy to create defect in eV

+T1=293;// temperature in kelvin

+T2=573;// temperature in kelvin

+ratio=exp((-E/k)*(1/(2*T1)-1/(2*T2)));// ratio of no. of defects at T1 & T2

+format('e',10);ratio;

+disp(ratio, "ratio of number of Frenkel defect")

+ratio=1/ratio;//

+disp(ratio,"it can be written as")

diff --git a/2708/CH14/EX14.12/ex_14_12.sce b/2708/CH14/EX14.12/ex_14_12.sce
new file mode 100755
index 000000000..c21d63b3a
--- /dev/null
+++ b/2708/CH14/EX14.12/ex_14_12.sce
@@ -0,0 +1,11 @@
+//Example 14.12 // fraction of vacancy sites 

+clc;

+clear;

+//given data :

+f=1D-10;// fraction of vacancy sites

+T1=500;// temperature in degree

+T2=2*T1;// condition given

+T1=T1+273;// to convert in kelvin

+T2=T2+273;// to convert in kelvin

+f1=exp(T1*log(f)/T2);//new fraction

+disp(f1,"new fraction at new temperature")

diff --git a/2708/CH14/EX14.4/ex_14_4.sce b/2708/CH14/EX14.4/ex_14_4.sce
new file mode 100755
index 000000000..c3ef3f286
--- /dev/null
+++ b/2708/CH14/EX14.4/ex_14_4.sce
@@ -0,0 +1,14 @@
+//Example 14.4 // wavelength & angle

+clc;

+clear;

+//given data :

+d=2.82;//spacing between successive planes in A

+theta=8+35/60;//in degree

+theta=theta*%pi/180;// to convert in radian

+n=1;// order of reflection

+lamda=2*d*sin(theta) /n;//de-broglie equation

+disp(lamda,"wavelength of NaCl in A ")

+n=2;//to find angleof reflection

+theta=asin(n*lamda/(2*d));//angle of reflection radian

+theta=theta*180/%pi;// to convert in degree

+disp(theta,"angle of reflection in degree")

diff --git a/2708/CH14/EX14.5/ex_14_5.sce b/2708/CH14/EX14.5/ex_14_5.sce
new file mode 100755
index 000000000..c63b786fa
--- /dev/null
+++ b/2708/CH14/EX14.5/ex_14_5.sce
@@ -0,0 +1,16 @@
+//Example 14.5 // wavelength & speed of neutron

+clc;

+clear;

+//given data :

+n=1;// given first reflection

+d=3.84;//spacing between successive planes in A

+m=1.67D-27;// mass of neutron in kg

+theta=30;//in degree

+theta=theta*%pi/180;// to convert in radian

+lamda=2*d*sin(theta) /n;//de-broglie equation

+disp(lamda,"wavelength of neutron in A ")

+h=6.626D-34;// plank's constant in joules-sec

+lamda=lamda*1D-10;// to convert in m

+v=h/(m*lamda);// e-Broglie relation

+disp(v,"speed of neutron in m/s")

+// in book it is wrongly calculated

diff --git a/2708/CH14/EX14.6/ex_14_6.sce b/2708/CH14/EX14.6/ex_14_6.sce
new file mode 100755
index 000000000..9b0a0c0eb
--- /dev/null
+++ b/2708/CH14/EX14.6/ex_14_6.sce
@@ -0,0 +1,25 @@
+//Example 14.6 // spacing d

+clc;

+clear;

+// 1st part

+theta=5+28/60;// given glancing angle in degree

+n=1;//order of reflections

+lamda=.586;// wavelength in A

+theta=theta*%pi/180;//to convert in degree

+d=n*lamda/(2*sin(theta));// spacing

+disp(d,"spacing in A")

+// in question there is a mistake 

+// 2nd part

+theta=12+1/60;// given glancing angle in degree

+n=2;//order of reflections

+theta=theta*%pi/180;//to convert in degree

+d=n*lamda/(2*sin(theta));// spacing

+disp(d,"spacing in A")

+//3rd part

+theta=18+12/60;// given glancing angle in degree

+n=3;//order of reflections

+theta=theta*%pi/180;//to convert in degree

+d=n*lamda/(2*sin(theta));// spacing

+disp(d,"spacing in A")

+

+//The glancing angle is taken differently in the solution

diff --git a/2708/CH14/EX14.7/ex_14_7.sce b/2708/CH14/EX14.7/ex_14_7.sce
new file mode 100755
index 000000000..f99d055a7
--- /dev/null
+++ b/2708/CH14/EX14.7/ex_14_7.sce
@@ -0,0 +1,16 @@
+//Example 14.7 // glancing  angle

+clc;

+clear;

+//given data :

+// 1st part

+lamda=1.549;// wavelength in A

+d=4.255;// in ter planer spacing in A

+n=1;//order of reflection

+theta=asin(n*lamda/(2*d));// glacing angle in radian

+theta=theta*180/%pi;// to convert in degree

+disp(theta,"glancing angle in degree") 

+// 2nd part

+n=2;//order of reflection

+theta=asin(n*lamda/(2*d));// glacing angle in radian

+theta=theta*180/%pi;// to convert in degree

+disp(theta,"glancing angle in degree")