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diff --git a/Engineering_Physics_by_S._Mani_Naidu/Chapter2_1.ipynb b/Engineering_Physics_by_S._Mani_Naidu/Chapter2_1.ipynb new file mode 100644 index 00000000..b1f33747 --- /dev/null +++ b/Engineering_Physics_by_S._Mani_Naidu/Chapter2_1.ipynb @@ -0,0 +1,271 @@ +{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "#2: Crystal Structures"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example number 2.1, Page number 2.16"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "free volume/unit cell is 0.007675 nm**3\n"
+ ]
+ }
+ ],
+ "source": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "r=0.1249; #atomic radius(nm)\n",
+ "n=2; #number of atoms\n",
+ "\n",
+ "#Calculation\n",
+ "a=4*r/math.sqrt(3); #edge length(m)\n",
+ "V=a**3; #volume(nm**3)\n",
+ "v=4*math.pi*r**3*n/3; #volume of atoms(nm**3)\n",
+ "Fv=V-v; #free volume/unit cell(nm**3)\n",
+ "\n",
+ "#Result\n",
+ "print \"free volume/unit cell is\",round(Fv,6),\"nm**3\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example number 2.2, Page number 2.16"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 7,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "lattice constant is 3.517 angstrom\n"
+ ]
+ }
+ ],
+ "source": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "n=2; #number of atoms\n",
+ "M=6.94; #atomic weight(kg)\n",
+ "rho=530; #density(kg/m**3)\n",
+ "Na=6.02*10**26; #avagadro number\n",
+ "\n",
+ "#Calculation\n",
+ "a3=n*M/(rho*Na);\n",
+ "a=a3**(1/3); #lattice constant(m)\n",
+ "\n",
+ "#Result\n",
+ "print \"lattice constant is\",round(a*10**10,3),\"angstrom\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example number 2.3, Page number 2.17"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 12,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "lattice constant is 2.87 angstrom\n"
+ ]
+ }
+ ],
+ "source": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "n=2; #number of atoms\n",
+ "M=55.85; #atomic weight(kg)\n",
+ "rho=7860; #density(kg/m**3)\n",
+ "Na=6.02*10**26; #avagadro number\n",
+ "\n",
+ "#Calculation\n",
+ "a3=n*M/(rho*Na);\n",
+ "a=a3**(1/3); #lattice constant(m)\n",
+ "\n",
+ "#Result\n",
+ "print \"lattice constant is\",round(a*10**10,2),\"angstrom\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example number 2.4, Page number 2.17"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 16,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "#number of atoms per m**3 is 177.3 *10**27\n"
+ ]
+ }
+ ],
+ "source": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "a=0.356*10**-9; #lattice constant(m)\n",
+ "n=8; #number of atoms\n",
+ "\n",
+ "#Calculation\n",
+ "N=n/a**3; #number of atoms per m**3\n",
+ "\n",
+ "#Result\n",
+ "print \"#number of atoms per m**3 is\",round(N/10**27,1),\"*10**27\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example number 2.5, Page number 2.17"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 18,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "number of atoms per sq. mm is 8.16 *10**12\n"
+ ]
+ }
+ ],
+ "source": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "a=3.5; #lattice constant(angstrom)\n",
+ "\n",
+ "#Calculation\n",
+ "A=a**2;\n",
+ "N=10**7*10**7/A; #number of atoms per sq. mm\n",
+ "\n",
+ "#Result\n",
+ "print \"number of atoms per sq. mm is\",round(N/10**12,2),\"*10**12\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example number 2.6, Page number 2.18"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 21,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "density is 5434.5 kg/m**3\n"
+ ]
+ }
+ ],
+ "source": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "n=8; #number of atoms\n",
+ "a=5.62*10**-10; #lattice constant(m)\n",
+ "M=72.59; #atomic weight(kg)\n",
+ "Na=6.02*10**26; #avagadro number\n",
+ "\n",
+ "#Calculation\n",
+ "rho=n*M/(a**3*Na); #density(kg/m**3)\n",
+ "\n",
+ "#Result\n",
+ "print \"density is\",round(rho,1),\"kg/m**3\""
+ ]
+ }
+ ],
+ "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
+}
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