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diff --git a/Modern_Physics/Chapter11_2.ipynb b/Modern_Physics/Chapter11_2.ipynb new file mode 100755 index 00000000..385146de --- /dev/null +++ b/Modern_Physics/Chapter11_2.ipynb @@ -0,0 +1,83 @@ +{ + "metadata": { + "name": "MP-11" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": "Solid State Physics" + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": "Example 11.1 Page 346" + }, + { + "cell_type": "code", + "collapsed": false, + "input": "#initiation of variable\nc=769.0*10**3; Na=6.023*10**23; JeV=1.6*10**-19; #various constants and given values\n\n#calculation\nBe=c/(Na*JeV); #Binding energy of an ion pair in the lattice\n\n#result\nprint\"The experimental value was found out to be in eV.\",round(Be,5);\n\n#partb\nn=9.0;a=1.7476; R=0.281; k= 1.44; #Given values and consstants\nBc=k*a*(1-(1/n))/R; #ionic binding energy eperimentally\n\n#result\nprint\"The calculated value of the binding energy in eV.is\",round(Bc,4);\n", + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": "The experimental value was found out to be in eV. 7.97983\nThe calculated value of the binding energy in eV.is 7.9606\n" + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": "Example 11.2 Page 350" + }, + { + "cell_type": "code", + "collapsed": false, + "input": "#initiation of variable\na=3.61;# amount of energy required to remove an electron from Cl- ion\nb=-5.14 #amount of energy returned when an electron is added to Na+ ion\\\nc=7.98 #binding energy of NaCl atom\n\n#calculation\nE=a+b+c #suom of all the energies\nprint\"The net energy to be supplied in eV is\",round(E,3);", + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": "The net energy to be supplied in eV is 6.45\n" + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": "Example 11.3 Page 355" + }, + { + "cell_type": "code", + "collapsed": false, + "input": "#initiation of variable\nfrom math import exp,sqrt\nNa=6.023*10**23; p=8.96*10**3; M=63.5*10**-3; #Na=avagadro's number,p=density,M=molar mass\n\n#calculation\nn= p*Na/M; #density of charge carriers\n\n#result'\nprint\"The density of charge carriers in copper in atoms/m3 is %.1e\" %round(n,3);\n\ns=5.88*10**7;m=9.11*10**-31;e=1.6*10**-19; #charge & mass of an electron,resistance per unit length\nt= s*m/(n*e**2); #average time between collisions\n\n#result\nprint \"The average time between collisions of conducting electrons in sec.is %.1e\" %t\n\n#partb\nEf=7.03*1.6*10**-19; #converting given enrgy to J\n\n#calculation\nVf=sqrt(2*Ef/m); #fermi velocity\nl=Vf*t; #mean free path\n\n#result\nprint \"The average mean free path is\",l,\"m =\",round(l*10**9,3),\" nm\"\n", + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": "The density of charge carriers in copper in atoms/m3 is 8.5e+28\nThe average time between collisions of conducting electrons in sec.is 2.5e-14\nThe average mean free path is 3.8690296096e-08 m = 38.69 nm\n" + } + ], + "prompt_number": 1 + } + ], + "metadata": {} + } + ] +}
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