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| author | hardythe1 | 2015-07-03 12:23:43 +0530 |
|---|---|---|
| committer | hardythe1 | 2015-07-03 12:23:43 +0530 |
| commit | 5a86a20b9de487553d4ef88719fb0fd76a5dd6a7 (patch) | |
| tree | db67ac5738a18b921d9a8cf6e86f402703f30bdf /Engineering_Physics/chapter5.ipynb | |
| parent | 37d315828bbfc0f5cabee669d2b9dd8cd17b5154 (diff) | |
| download | Python-Textbook-Companions-5a86a20b9de487553d4ef88719fb0fd76a5dd6a7.tar.gz Python-Textbook-Companions-5a86a20b9de487553d4ef88719fb0fd76a5dd6a7.tar.bz2 Python-Textbook-Companions-5a86a20b9de487553d4ef88719fb0fd76a5dd6a7.zip | |
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| -rwxr-xr-x | Engineering_Physics/chapter5.ipynb | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/Engineering_Physics/chapter5.ipynb b/Engineering_Physics/chapter5.ipynb deleted file mode 100755 index bf9aee93..00000000 --- a/Engineering_Physics/chapter5.ipynb +++ /dev/null @@ -1,177 +0,0 @@ -{
- "metadata": {
- "name": "",
- "signature": "sha256:141e2987b2be679ae1fc9e807cf81c12805438f836d3be09701fc88866bf9bb5"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
- {
- "cells": [
- {
- "cell_type": "heading",
- "level": 1,
- "metadata": {},
- "source": [
- "Chapter5:LASERS"
- ]
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Ex5.1:pg-164"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "import math\n",
- "#to calculate area of the spot on the moon\n",
- "lamda=6*10**-7 #wavelength in m\n",
- "d=2 #diameter in m\n",
- "dtheta=lamda/d #angular spread in radian\n",
- "D=4*10**8 #distance of the moon\n",
- "A=(D*dtheta)**2\n",
- "print \"the areal spread is A=\",\"{:.2e}\".format(A),\"m**2\"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "the areal spread is A= 1.44e+04 m**2\n"
- ]
- }
- ],
- "prompt_number": 11
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Ex5.2:pg-164"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "import math\n",
- "#to calculate angular spread of the beam\n",
- "lamda=8*10**-7 #wavelength in m\n",
- "d=5*10**-3 #aperture in m\n",
- "dtheta=lamda/d \n",
- "print \"the angular spread of the beam is dtheta=\",\"{:.1e}\".format(dtheta),\"radian\"\n",
- "#to calculate the areal spread when it reaches the moon\n",
- "D=4*10**8 #distance of the moon in m\n",
- "A=(D*dtheta)**2\n",
- "print \"the areal spread is A=\",\"{:.3e}\".format(A),\"m**2\"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "the angular spread of the beam is dtheta= 1.6e-04 radian\n",
- "the areal spread is A= 4.096e+09 m**2\n"
- ]
- }
- ],
- "prompt_number": 10
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Ex5.3:pg-165"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "import math\n",
- "#to calculate number of oscillations corresponding to the coherence length\n",
- "L=2.945*10**-2 #coherence length in m\n",
- "lamda=5890*10**-10 #wavelength of sodium light in m\n",
- "n=L/lamda\n",
- "print \"the number of oscillations is n=\",\"{:.1e}\".format(n),\"unitless\"\n",
- "#to calculate coherence time\n",
- "c=3*10**8 #light speed in m\n",
- "Time=L/c #coherence time\n",
- "print \"the coherence Time=\",\"{:.2e}\".format(Time),\"s\"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "the number of oscillations is n= 5.0e+04 unitless\n",
- "the coherence Time= 9.82e-11 s\n"
- ]
- }
- ],
- "prompt_number": 7
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Ex5.4:pg-165"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "import math\n",
- "#to calculate area and intensity of the image\n",
- "lamda=7200*10**-10 #wavelength in m\n",
- "d=5*10**-3 #aperture in m\n",
- "dtheta=lamda/d #angular spread in radian \n",
- "f=0.1 #focal length in m\n",
- "arealspread=(dtheta*f)**2\n",
- "print \"areal spread =\",\"{:.3e}\".format(arealspread),\"m**2\"\n",
- "power=50*10**-3\n",
- "I=power/arealspread\n",
- "print \"intensity of the image is I=\",\"{:.3e}\".format(I),\"watts/m**2\"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "areal spread = 2.074e-10 m**2\n",
- "intensity of the image is I= 2.411e+08 watts/m**2\n"
- ]
- }
- ],
- "prompt_number": 4
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [],
- "language": "python",
- "metadata": {},
- "outputs": []
- }
- ],
- "metadata": {}
- }
- ]
-}
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