Removed duplicates

1 files changed, 0 insertions, 238 deletions

diff --git a/backup/Engineering_Physics_by_P.K.Palanisamy_version_backup/Chapter5_1.ipynb b/backup/Engineering_Physics_by_P.K.Palanisamy_version_backup/Chapter5_1.ipynb
deleted file mode 100755
index f1b18946..00000000
--- a/backup/Engineering_Physics_by_P.K.Palanisamy_version_backup/Chapter5_1.ipynb
+++ /dev/null
@@ -1,238 +0,0 @@
-{

- "cells": [

-  {

-   "cell_type": "markdown",

-   "metadata": {},

-   "source": [

-    "#5: Elements of statistical mechanics"

-   ]

-  },

-  {

-   "cell_type": "markdown",

-   "metadata": {},

-   "source": [

-    "##Example number 5.1, Page number 5.10"

-   ]

-  },

-  {

-   "cell_type": "code",

-   "execution_count": 4,

-   "metadata": {

-    "collapsed": false

-   },

-   "outputs": [

-    {

-     "name": "stdout",

-     "output_type": "stream",

-     "text": [

-      "average thermal energy is 0.039 eV\n"

-     ]

-    }

-   ],

-   "source": [

-    "#importing modules\n",

-    "import math\n",

-    "from __future__ import division\n",

-    "\n",

-    "#Variable declaration\n",

-    "k=1.38*10**-23;    #boltzmann constant(J)\n",

-    "T=300;       #temperature(K)\n",

-    "e=1.6*10**-19;     #charge(c)\n",

-    "\n",

-    "#Calculation\n",

-    "E=3*k*T/(2*e);     #average thermal energy(eV)\n",

-    "\n",

-    "#Result\n",

-    "print \"average thermal energy is\",round(E,3),\"eV\""

-   ]

-  },

-  {

-   "cell_type": "markdown",

-   "metadata": {},

-   "source": [

-    "##Example number 5.3, Page number 5.18"

-   ]

-  },

-  {

-   "cell_type": "code",

-   "execution_count": 11,

-   "metadata": {

-    "collapsed": false

-   },

-   "outputs": [

-    {

-     "name": "stdout",

-     "output_type": "stream",

-     "text": [

-      "fermi function is 0.269\n"

-     ]

-    }

-   ],

-   "source": [

-    "#importing modules\n",

-    "import math\n",

-    "from __future__ import division\n",

-    "\n",

-    "#Variable declaration\n",

-    "kT=1;    #assume\n",

-    "E_Ef=kT;\n",

-    "\n",

-    "#Calculation\n",

-    "FE=1/(1+math.exp(1));     #fermi function\n",

-    "\n",

-    "#Result\n",

-    "print \"fermi function is\",round(FE,3)"

-   ]

-  },

-  {

-   "cell_type": "markdown",

-   "metadata": {},

-   "source": [

-    "##Example number 5.4, Page number 5.18"

-   ]

-  },

-  {

-   "cell_type": "code",

-   "execution_count": 15,

-   "metadata": {

-    "collapsed": false

-   },

-   "outputs": [

-    {

-     "name": "stdout",

-     "output_type": "stream",

-     "text": [

-      " temperature is 290.2 K\n"

-     ]

-    }

-   ],

-   "source": [

-    "#importing modules\n",

-    "import math\n",

-    "from __future__ import division\n",

-    "\n",

-    "#Variable declaration\n",

-    "FE=10/100;     #fermi function\n",

-    "EF=5.5;     #energy function(eV)\n",

-    "e=1.6*10**-19;     #charge(c)\n",

-    "k=1.38*10**-23;    #boltzmann constant(J)\n",

-    "\n",

-    "#Calculation\n",

-    "E=EF+(EF/100);    #energy(eV)\n",

-    "x=math.log((1/FE)-1);\n",

-    "T=(E-EF)*e/(k*x);     #temperature(K)\n",

-    "\n",

-    "#Result\n",

-    "print \"temperature is\",round(T,1),\"K\""

-   ]

-  },

-  {

-   "cell_type": "markdown",

-   "metadata": {},

-   "source": [

-    "##Example number 5.5, Page number 5.19"

-   ]

-  },

-  {

-   "cell_type": "code",

-   "execution_count": 20,

-   "metadata": {

-    "collapsed": false

-   },

-   "outputs": [

-    {

-     "name": "stdout",

-     "output_type": "stream",

-     "text": [

-      "fermi velocity is 0.86 *10**6 m s-1\n"

-     ]

-    }

-   ],

-   "source": [

-    "#importing modules\n",

-    "import math\n",

-    "from __future__ import division\n",

-    "\n",

-    "#Variable declaration\n",

-    "k=1.38*10**-23;    #boltzmann constant(J)\n",

-    "T=24600;     #temperature(K)\n",

-    "m=9.108*10**-31;    #mass(kg)\n",

-    "\n",

-    "#Calculation\n",

-    "vF=math.sqrt(2*k*T/m);     #fermi velocity(m s-1)\n",

-    "\n",

-    "#Result\n",

-    "print \"fermi velocity is\",round(vF/10**6,2),\"*10**6 m s-1\""

-   ]

-  },

-  {

-   "cell_type": "markdown",

-   "metadata": {},

-   "source": [

-    "##Example number 5.6, Page number 5.21"

-   ]

-  },

-  {

-   "cell_type": "code",

-   "execution_count": 29,

-   "metadata": {

-    "collapsed": false

-   },

-   "outputs": [

-    {

-     "name": "stdout",

-     "output_type": "stream",

-     "text": [

-      "number of states is 1.1877 *10**26\n",

-      "answer given in the book is wrong\n"

-     ]

-    }

-   ],

-   "source": [

-    "#importing modules\n",

-    "import math\n",

-    "from __future__ import division\n",

-    "from scipy.integrate import quad\n",

-    "\n",

-    "#Variable declaration\n",

-    "EF=3.0;     #fermi energy(eV)\n",

-    "e=1.6*10**-19;     #charge(c)\n",

-    "m=9.14*10**-31;    #mass(kg)\n",

-    "h=6.62*10**-34;    #planck's constant\n",

-    "\n",

-    "#Calculation\n",

-    "E1=EF*e;     #energy(J)\n",

-    "E2=(EF+0.01)*e;   #energy(J)\n",

-    "def zintg(E):\n",

-    "\treturn (4*math.pi*(2*m)**(3/2)*math.sqrt(E))/h**3;\n",

-    "\n",

-    "n=quad(zintg,E1,E2)[0];      #number of states\n",

-    "\n",

-    "#Result\n",

-    "print \"number of states is\",round(n/10**26,4),\"*10**26\"\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": "2.7.9"

-  }

- },

- "nbformat": 4,

- "nbformat_minor": 0

-}