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{
"metadata": {
"name": "",
"signature": "sha256:091a42f6c4748025b72b34c7f12edc07c6f7f79e00e0f5e82232274fbc41738c"
},
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"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"7: Interference"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example number 7.1, Page number 16"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#importing modules\n",
"import math\n",
"from __future__ import division\n",
"\n",
"#Variable declaration\n",
"theta=40; #angle of wedge(s)\n",
"beta=0.125*10**-2; #fringe width(m)\n",
"\n",
"#Calculation\n",
"lamda=2*beta*theta*(math.pi/180)*(1/60)*(1/60); #wavelength of light(m)\n",
"\n",
"#Result\n",
"print \"wavelength of light is\",int(lamda*10**10),\"angstrom\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"wavelength of light is 4848 angstrom\n"
]
}
],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example number 7.3, Page number 17"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#importing modules\n",
"import math\n",
"from __future__ import division\n",
"\n",
"#Variable declaration\n",
"n=100; #number of fringes\n",
"d=0.03*10**-3; #distance moved(m)\n",
"\n",
"#Calculation\n",
"lamda=2*d/n; #wavelength of light(m)\n",
"\n",
"#Result\n",
"print \"wavelength of light is\",lamda*10**10,\"angstrom\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"wavelength of light is 6000.0 angstrom\n"
]
}
],
"prompt_number": 6
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example number 7.4, Page number 17"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#importing modules\n",
"import math\n",
"from __future__ import division\n",
"\n",
"#Variable declaration\n",
"lamda1=5896*10**-10; #wavelength of D1 line(m)\n",
"lamda2=5890*10**-10; #wavelength of D2 line(m)\n",
"\n",
"#Calculation\n",
"d=lamda1*lamda2/(2*(lamda1-lamda2)); #distance the mirror has to be moved(m)\n",
"\n",
"#Result\n",
"print \"distance the mirror has to be moved is\",round(d*10**3,4),\"mm\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"distance the mirror has to be moved is 0.2894 mm\n"
]
}
],
"prompt_number": 13
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example number 7.5, Page number 18"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#importing modules\n",
"import math\n",
"from __future__ import division\n",
"\n",
"#Variable declaration\n",
"mew=1.5; #refractive index of plate\n",
"d=1.24; #distance between dark fringes(mm)\n",
"\n",
"#Calculation\n",
"t=d/(mew-1); #thickness of glass plate(mm)\n",
"\n",
"#Result\n",
"print \"thickness of glass plate is\",t,\"mm\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"thickness of glass plate is 2.48 mm\n"
]
}
],
"prompt_number": 15
}
],
"metadata": {}
}
]
}
|
