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{
"metadata": {
"name": "",
"signature": "sha256:427d2fadecfbb47aca45827faabee15c72f488581939d9b848cacc0b97c7f502"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 5 : principles of statistical\n",
"thermodynamics"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 5.1 pg : 104"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"from math import factorial\n",
"\t\t\t\n",
"# Variables\n",
"N1 = 1.\n",
"N2 = 1.\n",
"N3 = 3.\n",
"N4 = 1.\n",
"\t\t\t\n",
"# Calculations\n",
"N = N1+N2+N3+N4\n",
"sig = factorial(N) /(factorial(N1) *factorial(N2)*factorial(N3)*factorial(N4))\n",
"\t\t\t\n",
"# Results\n",
"print \"No. of ways of arranging = %d \"%(sig)\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"No. of ways of arranging = 120 \n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 5.2 pg : 104"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\t\t\t\n",
"# Variables\n",
"N = 6.\n",
"g = 4.\n",
"\t\t\t\n",
"# Calculations\n",
"sig = factorial(g+N-1) /(factorial(g-1) *factorial(N))\n",
"\t\t\t\n",
"# Results\n",
"print \"No. of ways of arranging = %d \"%(sig)\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"No. of ways of arranging = 84 \n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 5.3 pg : 104"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"from math import factorial\t\t\t\n",
"# Variables\n",
"N = 6.\n",
"g = 8.\n",
"\t\t\t\n",
"# Calculations\n",
"sig = factorial(g) /(factorial(N) *factorial(g-N))\n",
"\t\t\t\n",
"# Results\n",
"print \"No. of ways = %d \"%(sig)\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"No. of ways = 28 \n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 5.4 pg : 121"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"%matplotlib inline\n",
"import math \n",
"from matplotlib.pyplot import bar\n",
"\n",
"# Variables\n",
"N0 = 1.\n",
"\t\t\t\n",
"# Calculations\n",
"N1 = 3/math.e\n",
"N2 = 6/math.e**2\n",
"N3 = 10/math.e**3\n",
"N = N0+N1+N2+N3\n",
"ei = [0, 1, 2, 3]\n",
"\n",
"f0 = N0/N\n",
"f1 = N1/N\n",
"f2 = N2/N\n",
"f3 = N3/N\n",
"fi = [f0, f1, f2, f3]\n",
"\t\t\t\n",
"# Results\n",
"print \"fractional population of level 0 = %.3f\"%(f0)\n",
"print \" fractional population of level 1 = %.3f\"%(f1)\n",
"print \" fractional population of level 2 = %.3f\"%(f2)\n",
"print \" fractional population of level 3 = %.3f\"%(f3)\n",
"bar(ei,fi,0.1)\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"fractional population of level 0 = 0.293\n",
" fractional population of level 1 = 0.323\n",
" fractional population of level 2 = 0.238\n",
" fractional population of level 3 = 0.146\n"
]
},
{
"metadata": {},
"output_type": "pyout",
"prompt_number": 2,
"text": [
"<Container object of 4 artists>"
]
},
{
"metadata": {},
"output_type": "display_data",
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]
}
],
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}
],
"metadata": {}
}
]
}
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