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Diffstat (limited to 'Engineering_Physics_by_P._V._Naik/Chapter8.ipynb')
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diff --git a/Engineering_Physics_by_P._V._Naik/Chapter8.ipynb b/Engineering_Physics_by_P._V._Naik/Chapter8.ipynb new file mode 100755 index 00000000..b3ec194e --- /dev/null +++ b/Engineering_Physics_by_P._V._Naik/Chapter8.ipynb @@ -0,0 +1,360 @@ +{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:a95b407b682939fdad30498a4e63981a88538f3262f7c6d2067bc16aa9ba5b35"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "8: Magnetic materials and Spectroscopy"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example number 8.1, Page number 153"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "mew=0.9*10**-23; #magnetic dipole moment(J/T)\n",
+ "B=0.72; #magnetic field applied(T)\n",
+ "k=1.38*10**-23; #boltzmann constant\n",
+ "\n",
+ "#Calculation \n",
+ "T=(2*mew*B)/(3*k); #temperature(K)\n",
+ "\n",
+ "#Result\n",
+ "print \"The temperature is\",round(T,2),\"K\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The temperature is 0.31 K\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example number 8.2, Page number 153"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "#(C=mew0*M*T)/B.\n",
+ "#Therefore M=(C*B)/(mew0*T)\n",
+ "C=2*10**-3; #C is curies constant(K)\n",
+ "B=0.4; #applied magnetic field(T)\n",
+ "mew0=4*math.pi*10**-7;\n",
+ "T=300; #temperature(K)\n",
+ "\n",
+ "#Calculation \n",
+ "M=(C*B)/(mew0*T); #magnetisation(A/m)\n",
+ "\n",
+ "#Result\n",
+ "print \"magnetisation is\",round(M,2),\"A/m\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "magnetisation is 2.12 A/m\n"
+ ]
+ }
+ ],
+ "prompt_number": 4
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example number 8.3, Page number 153"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "e=1.6*10**-19;\n",
+ "B=0.35; #magnetic field(T)\n",
+ "lamda=500*10**-9; #wavelength(m)\n",
+ "m=9.1*10**-31;\n",
+ "c=3*10**8; #speed of light \n",
+ "\n",
+ "#Calculation \n",
+ "deltalambda=(e*B*(lamda)**2)/(4*(math.pi)*m*c*10**-9); #Zeeman shift in wave length(nm)\n",
+ "\n",
+ "#Result\n",
+ "print \"Zeeman shift in wave length is\",round(deltalambda,5),\"nm\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Zeeman shift in wave length is 0.00408 nm\n"
+ ]
+ }
+ ],
+ "prompt_number": 7
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example number 8.4, Page number 154"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "#T=(C*B)/(mew0*B)\n",
+ "C=2.1*10**-3; #C is curie's constant(K)\n",
+ "B=0.38; #magnetic field(T)\n",
+ "mew0=4*math.pi*10**-7; #molecular magnetic moment\n",
+ "M=2.15; #magnetisation(A/m)\n",
+ "\n",
+ "#Calculation \n",
+ "T=(C*B)/(mew0*M); #temperature(K)\n",
+ "\n",
+ "#Result\n",
+ "print \"Temperature is\",round(T,1),\"K\"\n",
+ "print \"answer in the book varies due to rounding off errors\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Temperature is 295.4 K\n",
+ "answer in the book varies due to rounding off errors\n"
+ ]
+ }
+ ],
+ "prompt_number": 9
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example number 8.5, Page number 154"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "#(M1*T1)=(M2*T2).Therefore M2=(M1*T1)/T2\n",
+ "M1=2; #Initial magnetisation(A/m)\n",
+ "T1=305; #Initial temperature(K)\n",
+ "T2=321;\t\t #final temperature(K)\t\n",
+ "\n",
+ "#Calculation \n",
+ "M2=(M1*T1)/T2; #magnetisation at 321K(A/m)\n",
+ "\n",
+ "#Result\n",
+ "print \"Magnetisation at 321 K is\",round(M2,1),\"A/m\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Magnetisation at 321 K is 1.9 A/m\n"
+ ]
+ }
+ ],
+ "prompt_number": 11
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example number 8.6, Page number 154"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "mew0=4*math.pi*10**-7; #molecular magnetic moment\n",
+ "M=4; #magnetisation(A/m)\n",
+ "T=310; #temperature(K)\n",
+ "C=1.9*10**-3; #Curie's constant(K)\n",
+ "\n",
+ "#Calculation \n",
+ "B=(mew0*M*T)/C; #magnetic field(T)\n",
+ "\n",
+ "#Result\n",
+ "print \"Magnetic field is\",round(B,2),\"T\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Magnetic field is 0.82 T\n"
+ ]
+ }
+ ],
+ "prompt_number": 13
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example number 8.7, Page number 154"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "#e/m is gyromagnetic ratio.\n",
+ "deltalambda=0.01*10**-9; #Zeeman shift(m)\n",
+ "c=3*10**8; #speed of light in vacuum(m/s)\n",
+ "lamda=600*10**-9; #wavelength(m)\n",
+ "e=1.6*10**-19;\n",
+ "m=9.1*10**-31;\n",
+ "\n",
+ "#Calculation \n",
+ "B=(deltalambda*4*math.pi*m*c)/(e*(lamda)**2); #uniform magnetic field(T)\n",
+ "\n",
+ "#Result\n",
+ "print \"Magnetic field is\",round(B,4),\"T\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Magnetic field is 0.5956 T\n"
+ ]
+ }
+ ],
+ "prompt_number": 16
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example number 8.8, Page number 154"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#importing modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "deltalambda=0.01*10**-9; #Zeeman shift(m)\n",
+ "c=3*10**8; #speed of light in vacuum(m/s)\n",
+ "B=0.78; #magnetic field(T)\n",
+ "lamda=550*10**-9; #wavelength(m)\n",
+ "\n",
+ "#Calculation \n",
+ "Y=(deltalambda*4*math.pi*3*10**8)/(B*(lamda)**2); #e/m ratio(C/kg)\n",
+ "\n",
+ "#Result\n",
+ "print \"e/m ratio is\",round(Y/10**11,1),\"*10**11 C/kg\"\n",
+ "print \"answer in the book varies due to rounding off errors\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "e/m ratio is 1.6 *10**11 C/kg\n",
+ "answer in the book varies due to rounding off errors\n"
+ ]
+ }
+ ],
+ "prompt_number": 21
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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