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 },
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 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "heading",
     "level": 1,
     "metadata": {},
     "source": [
      "Chapter 14, Ultrasonics"
     ]
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 1, page 510"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "from __future__ import division\n",
      "# Fundamental frequency\n",
      "#given data :\n",
      "t=1.6*10**-3 # in m\n",
      "lamda=2*t # in m\n",
      "v=5760 # in m/s\n",
      "n1=v*10**-6/lamda \n",
      "print \"Fundamental frequency, n1 = %0.2f MHz \" %n1"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Fundamental frequency, n1 = 1.80 MHz \n"
       ]
      }
     ],
     "prompt_number": 1
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 2, page 510"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#  distance\n",
      "#given data :\n",
      "th=40 #cm\n",
      "t1=30 #micro-seconds\n",
      "t2=80 #micro seconds\n",
      "x=((2*th*10**-2*t1*10**-6)/(2*t2*10**-6))*100 #cm\n",
      "print \"Distance %0.2f cm \" %x"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Distance 15.00 cm \n"
       ]
      }
     ],
     "prompt_number": 3
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 3, page 510"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# Thickness\n",
      "#given data :\n",
      "v=5000 # in m/s\n",
      "N=50000 # in Hz\n",
      "t=v/(2*N) \n",
      "print \"Thickness of steel plate, t = %0.2f m \" %t"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Thickness of steel plate, t = 0.05 m \n"
       ]
      }
     ],
     "prompt_number": 4
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 4, page "
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "from math import pi\n",
      "#  Capacitance\n",
      "#given data :\n",
      "L=1 # in H\n",
      "n=10**6 # in Hz\n",
      "C=1*10**12/(4*pi**2*n**2*L) \n",
      "print \"The capacitance, C = %0.3f micro-F \" %C"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "The capacitance, C = 0.025 micro-F \n"
       ]
      }
     ],
     "prompt_number": 6
    }
   ],
   "metadata": {}
  }
 ]
}