From c7fe425ef3c5e8804f2f5de3d8fffedf5e2f1131 Mon Sep 17 00:00:00 2001 From: hardythe1 Date: Tue, 7 Apr 2015 15:58:05 +0530 Subject: added books --- sample_notebooks/SINDHUARROJU/Chapter1.ipynb | 463 +++++++++++++++++++++++++++ 1 file changed, 463 insertions(+) create mode 100755 sample_notebooks/SINDHUARROJU/Chapter1.ipynb (limited to 'sample_notebooks/SINDHUARROJU') diff --git a/sample_notebooks/SINDHUARROJU/Chapter1.ipynb b/sample_notebooks/SINDHUARROJU/Chapter1.ipynb new file mode 100755 index 00000000..aec285c1 --- /dev/null +++ b/sample_notebooks/SINDHUARROJU/Chapter1.ipynb @@ -0,0 +1,463 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:305dcc155810a92329b40a851ec0d721020f53211b825d9c1f3b0e3bb9312285" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "1: Acoustics" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example number 1.1, Page number 12" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "p=50; #sound waves with output power(W)\n", + "r=4; #Distance(m)\n", + "\n", + "#Calculation\n", + "I=p/(4*math.pi*r**2) #Intensity(W/m**2)\n", + "\n", + "#Result\n", + "print \"Intensity of sound at a distance of 4m from the source is\",round(I,2),\"W/m**2\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Intensity of sound at a distance of 4m from the source is 0.25 W/m**2\n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example number 1.2, Page number 12" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "Io=10**-12; #Initial intensity of sound(W/m**2)\n", + "d=50; #number of decibels given by 10log(Io/I1)\n", + "P=70; #Output power(W)\n", + "\n", + "#Calculation\n", + "I1=(10**5)*Io; #Intensity(W/m**2)\n", + "r=math.sqrt(P/(4*math.pi*I1)); #distance(m)\n", + "\n", + "#Result\n", + "print \"The distance at which sound reduces to a level of 50dB is\",round(r/10**3,2),\"*10**3 m\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The distance at which sound reduces to a level of 50dB is 7.46 *10**3 m\n" + ] + } + ], + "prompt_number": 5 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example number 1.3, Page number 12" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "v=8000; #volume of the hall(m**3)\n", + "T=1.5; #Reverberation time(sec)\n", + "\n", + "#Calculation\n", + "A=(0.161*v)/T; #Total absorption time(m**2 sabine)\n", + "\n", + "#Result\n", + "print \"The total reverberation in the hall is\",round(A,2),\"m**2 sabine\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The total reverberation in the hall is 858.67 m**2 sabine\n" + ] + } + ], + "prompt_number": 7 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example number 1.4, Page number 12" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "l=25; #length of the hall(m)\n", + "b=20; #breadth of the hall(m)\n", + "h=10; #height of the hall(m)\n", + "T=4; #Reverberation time(s)\n", + "\n", + "#Calculation\n", + "V=l*b*h; #Volume of the hall(m**3)\n", + "A=(0.161*V)/T; #Total absorption time(m**2 sabine)\n", + "a=A/(2*((l*b)+(b*h)+(l*h))); #a is absorption co-efficient\n", + "\n", + "#Result\n", + "print \"The average absorption co-efficients of surfaces is\",round(a,3)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The average absorption co-efficients of surfaces is 0.106\n" + ] + } + ], + "prompt_number": 9 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example number 1.5, Page number 12" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "Y=77*(10**10); #Youngs modulus for quartz(dyne/cm**2)\n", + "rho=2.6; #density of quartz(g/cm**3)\n", + "t=0.4; #thickness(cm)\n", + "\n", + "#Calculation\n", + "f=((1/(2*t))*math.sqrt(Y/rho))*10**-3; #frequency(kHz)\n", + "\n", + "#Result\n", + "print \"The frequency of ultrasonic waves produced is\",int(f),\"kHz\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The frequency of ultrasonic waves produced is 680 kHz\n" + ] + } + ], + "prompt_number": 11 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example number 1.6, Page number 12" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "Y=81*10**10; #Young's modulus for barium titanate(dynes/cm**2)\n", + "rho=5.51; #density of barium titanate(g/cm**3)\n", + "f=900; #frequency of ultrasonic waves(kHZ)\n", + "\n", + "#Calculation\n", + "t=((1/(2*f))*math.sqrt(Y/rho))*10**-2; #thickness of crystal(mm)\n", + "\n", + "#Result\n", + "print \"The thickness of the crystal to produce ultrasonic waves is\",round(t,2),\"mm\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The thickness of the crystal to produce ultrasonic waves is 2.13 mm\n" + ] + } + ], + "prompt_number": 13 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example number 1.7, Page number 13" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "r=3; #distance(m)\n", + "I=0.86; #Intensity of sound source(W/m**2)\n", + "\n", + "#Calculation\n", + "P=4*math.pi*r**2*I; #Power of the sound source(W)\n", + "\n", + "#Result\n", + "print \"The output power of the sound source is\",round(P,2),\"W\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The output power of the sound source is 97.26 W\n" + ] + } + ], + "prompt_number": 15 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example number 1.8, Page number 13" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "d=60; #Number of decibels given by 10*log(I/I0)\n", + "I0=10**-12; #Initial intensity of sound(W/m**2)\n", + "I=10**-6; #since 10log(I/I0)=60\n", + "r=200; #distance(m)\n", + "\n", + "#Calculation\n", + "P=4*math.pi*r**2*I; #output power of the sound source(W)\n", + "\n", + "#Result\n", + "print \"The output power of the sound source is\",round(P,1),\"W\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The output power of the sound source is 0.5 W\n" + ] + } + ], + "prompt_number": 17 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example number 1.9, Page number 13" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "V=9250; #volume of the hall(m**3)\n", + "A=900; #Total absorption(m**2 sabine)\n", + "\n", + "#Calculation\n", + "T=(0.161*V)/A; #Reverberation time(s)\n", + "\n", + "#Result\n", + "print \"The reverberation time in a hall is\",round(T,2),\"s\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The reverberation time in a hall is 1.65 s\n" + ] + } + ], + "prompt_number": 19 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example number 1.10, Page number 13" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "f1=400; #Initial frequency(kHZ)\n", + "f2=500; #New frequency(kHZ)\n", + "t1=3; #initial thickness of the crystal(mm)\n", + "\n", + "#Calculation\n", + "t2=(f1*t1)/f2; #required thickness(mm)\n", + "\n", + "#Result\n", + "print \"The required thickness of the crystal is\",t2,\"mm\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The required thickness of the crystal is 2.4 mm\n" + ] + } + ], + "prompt_number": 20 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example number 1.11, Page number 13" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "t1=2; #Initial thickness(mm)\n", + "t2=2.8; #New thickness(mm)\n", + "\n", + "#Calculation\n", + "F=t1/t2; #ratio of new to old frequencies\n", + "\n", + "#Result\n", + "print \"The ratio of new to old frequencies is\",round(F,3)," + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The ratio of new to old frequencies is 0.714\n" + ] + } + ], + "prompt_number": 23 + } + ], + "metadata": {} + } + ] +} \ No newline at end of file -- cgit