initial commit / add all books

6 files changed, 43 insertions, 0 deletions

diff --git a/3159/CH14/EX14.1/Ex14_1.sce b/3159/CH14/EX14.1/Ex14_1.sce
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index 000000000..12bec7916
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+// Calculate energy difference

+clc

+n_x1 = 1 // atomic level

+n_y1 = 1// atomic level

+n_z1 = 1// atomic level

+n_x2 = 2// atomic level

+L = 10 // lattice parameter in mm

+h = 6.626e-34 // plank constant

+m_e = 9.109e-31 // mass of electron in kg

+printf("\n Example 14.1")

+E1 = h^2*(n_x1^2+n_y1^2+n_z1^2)/(8*m_e*(L*1e-3)^2)

+E2 = h^2*(n_x2^2+n_y1^2+n_z1^2)/(8*m_e*(L*1e-3)^2)

+E = E2-E1 // energy difference 

+printf("\n Energy difference is %.2e J ",E)

diff --git a/3159/CH14/EX14.1/Ex14_1.txt b/3159/CH14/EX14.1/Ex14_1.txt
new file mode 100755
index 000000000..cf19699f2
--- /dev/null
+++ b/3159/CH14/EX14.1/Ex14_1.txt
@@ -0,0 +1,3 @@
+ 

+ Example 14.1

+ Energy difference is 1.81e-33 J  
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diff --git a/3159/CH14/EX14.2/Ex14_2.sce b/3159/CH14/EX14.2/Ex14_2.sce
new file mode 100755
index 000000000..96d0dbb94
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+++ b/3159/CH14/EX14.2/Ex14_2.sce
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+// Calculate conductivity of copper at 300 K

+clc

+tau = 2e-14 // collision time of electron in s

+e = 1.602e-19 // charge on electron

+m_e = 9.1e-31 // mass of electron in kg

+

+printf("\n Example 14.2")

+n = 6.023e23*8960/0.06354

+

+sigma= n*e^2*tau/m_e

+printf("\n Conductivity of copper at 300 K is %.1e ohm^-1 m^-1 ",sigma)

diff --git a/3159/CH14/EX14.2/Ex14_2.txt b/3159/CH14/EX14.2/Ex14_2.txt
new file mode 100755
index 000000000..801f80529
--- /dev/null
+++ b/3159/CH14/EX14.2/Ex14_2.txt
@@ -0,0 +1,3 @@
+ 

+ Example 14.2

+ Conductivity of copper at 300 K is 4.8e+07 ohm^-1 m^-1 
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diff --git a/3159/CH14/EX14.3/Ex14_3.sce b/3159/CH14/EX14.3/Ex14_3.sce
new file mode 100755
index 000000000..008f50a21
--- /dev/null
+++ b/3159/CH14/EX14.3/Ex14_3.sce
@@ -0,0 +1,9 @@
+// Estimation of resistivity due to impurity scattering of 1% of Nickel in copper lattice

+clc

+r_cu = 1.8e-8 // resistivity of pure copper in ohm-m

+r_Ni_cu = 7e-8 //resistivity of copper 4% Ni in ohm-m

+per1 = 4//impurity in percent

+per2 = 1 // impurity in percent

+printf("\n Example 14.3")

+r = (r_Ni_cu-r_cu)*per2/per1 // resistivity of copper 1% Ni in ohm-m

+printf("\n Resistivity due to impurity scattering of 1 %% of Nickel in copper lattice is %.1e ohm-m",r)

diff --git a/3159/CH14/EX14.3/Ex14_3.txt b/3159/CH14/EX14.3/Ex14_3.txt
new file mode 100755
index 000000000..5c33e593c
--- /dev/null
+++ b/3159/CH14/EX14.3/Ex14_3.txt
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+

+ Example 14.3

+ Resistivity due to impurity scattering of 1 % of Nickel in copper lattice is 1.3e-08 ohm-m 
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