From db0855dbeb41ecb8a51dde8587d43e5d7e83620f Mon Sep 17 00:00:00 2001 From: Thomas Stephen Lee Date: Fri, 28 Aug 2015 16:53:23 +0530 Subject: add books --- .../Chapter1_1.ipynb | 284 +++++++++++++++++++++ 1 file changed, 284 insertions(+) create mode 100644 Engineering_Physics_by_S._Mani_Naidu/Chapter1_1.ipynb (limited to 'Engineering_Physics_by_S._Mani_Naidu/Chapter1_1.ipynb') diff --git a/Engineering_Physics_by_S._Mani_Naidu/Chapter1_1.ipynb b/Engineering_Physics_by_S._Mani_Naidu/Chapter1_1.ipynb new file mode 100644 index 00000000..55b436e9 --- /dev/null +++ b/Engineering_Physics_by_S._Mani_Naidu/Chapter1_1.ipynb @@ -0,0 +1,284 @@ +{ + "cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "#1: Bonding in Solids" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "##Example number 1.1, Page number 1.11" + ] + }, + { + "cell_type": "code", + "execution_count": 1, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "bond energy is -4.6 eV\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "e=1.6*10**-19; #charge of electron(c)\n", + "epsilon0=8.85*10**-12; #permittivity(C/Nm)\n", + "r0=236*10**-12; #seperation(m)\n", + "IE=5.14; #ionisation energy of Na(eV)\n", + "Ea=-3.65; #electron affinity(eV)\n", + "\n", + "#Calculation\n", + "V=-e**2/(4*e*math.pi*epsilon0*r0); \n", + "BE=IE+Ea+round(V,2); #bond energy(eV)\n", + "\n", + "#Result\n", + "print \"bond energy is\",round(BE,1),\"eV\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "##Example number 1.2, Page number 1.11" + ] + }, + { + "cell_type": "code", + "execution_count": 2, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "total cohesive energy per atom is -3.0684 eV\n", + "answer varies due to rounding off errors\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "e=1.602*10**-19; #charge of electron(c)\n", + "epsilon0=8.85*10**-12; #permittivity(C/Nm)\n", + "r0=0.314*10**-9; #seperation(m)\n", + "A=1.75; #madelung constant\n", + "n=5.77; #repulsive exponent value\n", + "IE=4.1; #ionisation energy of K(eV)\n", + "Ea=3.6; #electron affinity(eV)\n", + "\n", + "#Calculation\n", + "E=-A*e**2*(1-(1/n))/(4*e*math.pi*epsilon0*r0); #energy(eV)\n", + "Ce=E/2; #cohesive energy per atom(eV)\n", + "x=IE-Ea; #energy(eV)\n", + "CE=Ce+(x/2); #total cohesive energy per atom(eV)\n", + "\n", + "#Result\n", + "print \"total cohesive energy per atom is\",round(CE,4),\"eV\"\n", + "print \"answer varies due to rounding off errors\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "##Example number 1.3, Page number 1.12" + ] + }, + { + "cell_type": "code", + "execution_count": 4, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "cohesive energy is -7.965 eV\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "e=1.602*10**-19; #charge of electron(c)\n", + "epsilon0=8.85*10**-12; #permittivity(C/Nm)\n", + "r0=0.281*10**-9; #seperation(m)\n", + "alpham=1.748; #madelung constant\n", + "n=9; #repulsive exponent value\n", + "\n", + "#Calculation\n", + "E=-alpham*e**2*(1-(1/n))/(4*e*math.pi*epsilon0*r0); #cohesive energy(eV)\n", + "\n", + "#Result\n", + "print \"cohesive energy is\",round(E,3),\"eV\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "##Example number 1.4, Page number 1.12" + ] + }, + { + "cell_type": "code", + "execution_count": 5, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "potential energy is 5.755 eV\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "e=1.6*10**-19; #charge of electron(c)\n", + "epsilon0=8.85*10**-12; #permittivity(C/Nm)\n", + "r0=2.5*10**-10; #seperation(m)\n", + "\n", + "#Calculation\n", + "PE=e**2/(4*e*math.pi*epsilon0*r0); #potential energy(eV)\n", + "\n", + "#Result\n", + "print \"potential energy is\",round(PE,3),\"eV\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "##Example number 1.5, Page number 1.13" + ] + }, + { + "cell_type": "code", + "execution_count": 9, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "cohesive energy is -3.46 eV\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "m=1;\n", + "n=9; #repulsive exponent value\n", + "a=1.748*10**-28; \n", + "r0=0.281*10**-9; #seperation(m)\n", + "\n", + "#Calculation\n", + "Ur0=-a*(1-(m/n))/(e*r0**m); #cohesive energy(eV)\n", + "\n", + "#Result\n", + "print \"cohesive energy is\",round(Ur0,2),\"eV\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "##Example number 1.6, Page number 1.13" + ] + }, + { + "cell_type": "code", + "execution_count": 15, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "cohesive energy is -3.59 eV\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "e=1.6*10**-19; #charge of electron(c)\n", + "epsilon0=8.85*10**-12; #permittivity(C/Nm)\n", + "r0=0.281*10**-9; #seperation(m)\n", + "IE=5.14; #ionisation energy of Na(eV)\n", + "Ea=-3.61; #electron affinity(eV)\n", + "\n", + "#Calculation\n", + "V=-e**2/(4*e*math.pi*epsilon0*r0); \n", + "CE=IE+Ea+round(V,2); #cohesive energy(eV)\n", + "\n", + "#Result\n", + "print \"cohesive energy is\",CE,\"eV\"" + ] + } + ], + "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 +} -- cgit