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| author | hardythe1 | 2015-04-07 15:58:05 +0530 |
|---|---|---|
| committer | hardythe1 | 2015-04-07 15:58:05 +0530 |
| commit | c7fe425ef3c5e8804f2f5de3d8fffedf5e2f1131 (patch) | |
| tree | 725a7d43dc1687edf95bc36d39bebc3000f1de8f /Modern_Physics/chapter7.ipynb | |
| parent | 62aa228e2519ac7b7f1aef53001f2f2e988a6eb1 (diff) | |
| download | Python-Textbook-Companions-c7fe425ef3c5e8804f2f5de3d8fffedf5e2f1131.tar.gz Python-Textbook-Companions-c7fe425ef3c5e8804f2f5de3d8fffedf5e2f1131.tar.bz2 Python-Textbook-Companions-c7fe425ef3c5e8804f2f5de3d8fffedf5e2f1131.zip | |
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Diffstat (limited to 'Modern_Physics/chapter7.ipynb')
| -rwxr-xr-x | Modern_Physics/chapter7.ipynb | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/Modern_Physics/chapter7.ipynb b/Modern_Physics/chapter7.ipynb new file mode 100755 index 00000000..84f294f8 --- /dev/null +++ b/Modern_Physics/chapter7.ipynb @@ -0,0 +1,186 @@ +{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:bb88588092f5e168d4a1c62bb7bb87ac343b1c2045bd4d31cd2391090ea3e567"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "7: Classification of Solids"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example number 7.1, Page number 138"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#import modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "W=11000; #wavelength(angstrom)\n",
+ "\n",
+ "#Calculation\n",
+ "Eg=W/12400; #energy gap(eV)\n",
+ "\n",
+ "#Result\n",
+ "print \"Energy Gap is\",round(Eg,3),\"eV\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Energy Gap is 0.887 eV\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example number 7.2, Page number 138"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#import modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "p=1.7*10**-6; #resistivity(ohm-cm)\n",
+ "d=8.96; #density(g/cc)\n",
+ "W=63.5; #atomic weight(gm)\n",
+ "Na=6.02*10**23; #Avagadro number(per g-mol)\n",
+ "e=1.6*10**-19; #the charge on electron(C)\n",
+ "\n",
+ "#Calculation\n",
+ "n=8.96*Na/W; #number of Cu atoms per cc\n",
+ "mewe=1/(p*e*n); #mobility of electrons(cm^2/V-s)\n",
+ "\n",
+ "#Result\n",
+ "print \"mobility of electrons is\",round(mewe,1),\"cm^2/V-s\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "mobility of electrons is 43.3 cm^2/V-s\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example number 7.3, Page number 139"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#import modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "d1=2.5*10**19; #density of charge carriers(per m^3)\n",
+ "d2=4.2*10**28; #density of germanium atoms(per m^3)\n",
+ "mewe=0.36; #mobilty of electrons(m^2/V-s)\n",
+ "Na=6.02*10**23; #Avgraodo no.(per g-mol)\n",
+ "e=1.6*10**-19; #the charge on electron(C)\n",
+ "\n",
+ "#Calculation\n",
+ "Nd=d2/10**6; #density of added impurity atoms(atoms/m^3)\n",
+ "sigma_n=Nd*e*mewe; #conductivity(mho/m)\n",
+ "rho_n=1/sigma_n; #resistivity of doped germanium(ohm-m)\n",
+ "\n",
+ "#Result\n",
+ "print \"resistivity of doped germanium is\",round(rho_n*10**3,3),\"*10**-3 ohm-m\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "resistivity of doped germanium is 0.413 *10**-3 ohm-m\n"
+ ]
+ }
+ ],
+ "prompt_number": 10
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example number 7.4, Page number 139"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#import modules\n",
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration\n",
+ "Eg=0.75; #energy gap(eV)\n",
+ "\n",
+ "#Calculation\n",
+ "lamda=12400/Eg; #wavelength(angstrom)\n",
+ "\n",
+ "#Result\n",
+ "print \"wavelength is\",int(lamda),\"angstrom\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "wavelength is 16533 angstrom\n"
+ ]
+ }
+ ],
+ "prompt_number": 12
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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