Added(A)/Deleted(D) following books

 A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter1.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter10.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter11.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter12.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter13.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter14.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter15.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter2.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter3.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter4.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter5.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter6.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter7.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter8.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/Chapter9.ipynb
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/screenshots/11.png
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/screenshots/22.png
A  BSc_3rd_Year_Physics_Paper_4_by_Sanjeeva_Rao,_Bhikshmaiah,_Ramakrishna_Reddy,_Ananta_Ramaiah/screenshots/33.png
A  Modern_physics_for_engineers_by_S.P.Taneja/AppendixB.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/AppendixC.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/AppendixE.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/Chapter18.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter1.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter10.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter11.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter12.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter14.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter15.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter17.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter19.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter2.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter20.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter21.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter23.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter24.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter4.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter5.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter6.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter7.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter8.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chapter9.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/chpater3.ipynb
A  Modern_physics_for_engineers_by_S.P.Taneja/screenshots/image1.png
A  Modern_physics_for_engineers_by_S.P.Taneja/screenshots/image2.png
A  Modern_physics_for_engineers_by_S.P.Taneja/screenshots/image3.png
A  Solid_State_Physics_by_Dr_M_Arumugam/Chapter1.ipynb
A  Solid_State_Physics_by_Dr_M_Arumugam/Chapter10.ipynb
A  Solid_State_Physics_by_Dr_M_Arumugam/Chapter11.ipynb
A  Solid_State_Physics_by_Dr_M_Arumugam/Chapter12.ipynb
A  Solid_State_Physics_by_Dr_M_Arumugam/Chapter13.ipynb
A  Solid_State_Physics_by_Dr_M_Arumugam/Chapter14.ipynb
A  Solid_State_Physics_by_Dr_M_Arumugam/Chapter2.ipynb
A  Solid_State_Physics_by_Dr_M_Arumugam/Chapter3.ipynb
A  Solid_State_Physics_by_Dr_M_Arumugam/Chapter4.ipynb
A  Solid_State_Physics_by_Dr_M_Arumugam/Chapter5.ipynb
A  Solid_State_Physics_by_Dr_M_Arumugam/Chapter6.ipynb
A  Solid_State_Physics_by_Dr_M_Arumugam/Chapter8.ipynb
A  Solid_State_Physics_by_Dr_M_Arumugam/screenshots/22.png
A  Solid_State_Physics_by_Dr_M_Arumugam/screenshots/33.png
A  Solid_State_Physics_by_Dr_M_Arumugam/screenshots/44.png

1 files changed, 151 insertions, 0 deletions

diff --git a/Solid_State_Physics_by_Dr_M_Arumugam/Chapter1.ipynb b/Solid_State_Physics_by_Dr_M_Arumugam/Chapter1.ipynb
new file mode 100644
index 00000000..7770f9a6
--- /dev/null
+++ b/Solid_State_Physics_by_Dr_M_Arumugam/Chapter1.ipynb
@@ -0,0 +1,151 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# 1: Bonding in Solids"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 1, Page number 1.21"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "-2*a/r**3 + 90*b/r**11\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "from sympy import diff,Symbol\n",
+    "import numpy as np\n",
+    "\n",
+    "#Variable declaration\n",
+    "n=1;\n",
+    "m=9;\n",
+    "a=Symbol('a')\n",
+    "b=Symbol('b')\n",
+    "r=Symbol('r')\n",
+    "\n",
+    "#Calculation\n",
+    "y=(-a/(r**n))+(b/(r**m));\n",
+    "y=diff(y,r);\n",
+    "y=diff(y,r);\n",
+    "\n",
+    "#Result\n",
+    "print y"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "young's modulus is 157 GPa\n"
+     ]
+    }
+   ],
+   "source": [
+    "#since the values of a,b,r are declared as symbols in the above cell, it cannot be solved there. hence it is being solved here with the given variable declaration\n",
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "a=7.68*10**-29;     \n",
+    "r0=2.5*10**-10;    #radius(m)\n",
+    "\n",
+    "#Calculation\n",
+    "b=a*(r0**8)/9;\n",
+    "y=((-2*a*r0**8)+(90*b))/r0**11;    \n",
+    "E=y/r0;           #young's modulus(Pa)\n",
+    "\n",
+    "#Result\n",
+    "print \"young's modulus is\",int(E/10**9),\"GPa\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 2, Page number 1.22"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "effective charge is 0.72 *10**-19 coulomb\n",
+      "answer given in the book is wrong\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "dm=1.98*10**-29/3;      #dipole moment\n",
+    "l=0.92*10**-10;         #bond length(m)\n",
+    "\n",
+    "#Calculation\n",
+    "ec=dm/l;        #effective charge(coulomb)\n",
+    "\n",
+    "#Result\n",
+    "print \"effective charge is\",round(ec*10**19,2),\"*10**-19 coulomb\"\n",
+    "print \"answer given in the book is wrong\""
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 2",
+   "language": "python",
+   "name": "python2"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.11"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}