{ "metadata": { "name": "", "signature": "sha256:d8a3e9ee0b493342a03a360ee0ca604f80a61547dd5ed22ef022608eecfbe8c4" }, "nbformat": 3, "nbformat_minor": 0, "worksheets": [ { "cells": [ { "cell_type": "heading", "level": 1, "metadata": {}, "source": [ "Chapter 9 - Boltzmann distribution law" ] }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Example 1 - pg 235" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#calculate the no of particles\n", "#Initialization of variables\n", "import math\n", "r=2.1*10**-6 #cm\n", "n=889\n", "x=0.1 #cm\n", "T=298.2 #K\n", "#calculations\n", "V=4/3 *math.pi *r**3\n", "rho=19.3-1\n", "ffd=rho*V*980.7\n", "eps=ffd*x\n", "logN=-6.96*10**-14 /(2.303*1.38*10**-16 *T)\n", "N=10**logN *n\n", "#results\n", "print '%s %.1f' %(\"No. of particles =\",N)\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "No. of particles = 163.9\n" ] } ], "prompt_number": 1 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Example 2 - pg 237" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#calculate the Temperature\n", "#Initialization of variables\n", "import math\n", "x=1. #percent\n", "wave=1595 #cm**-1\n", "#calculations\n", "E=2.8593*wave\n", "Nratio=(100-x)/x\n", "logN=math.log10(Nratio)\n", "T=E/(2.303*1.987*logN)\n", "#results\n", "print '%s %d %s' %(\"Temperature =\",T,\"K\")\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Temperature = 499 K\n" ] } ], "prompt_number": 2 } ], "metadata": {} } ] }