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{
"metadata": {
"name": "",
"signature": "sha256:3ee27523440d66319c8d17b88b593002a8ca441a824b734c02da7b3a1165c0fa"
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"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"12: Artificial Radioactivity"
]
},
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Example number 12.1, Page number 247"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#import modules\n",
"import math\n",
"from __future__ import division\n",
"\n",
"#Variable declaration\n",
"r=0.5; #ratio of mass of Pb206 and mass of U238\n",
"t=4.5*10**9; #half life(years)\n",
"\n",
"#Calculation\n",
"T=(math.log(1+r))*(t/0.693); #age(years)\n",
"T=T/10**9;\n",
"\n",
"#Result\n",
"print \"age of rock is\",round(T,2),\"*10**9 years\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"age of rock is 2.63 *10**9 years\n"
]
}
],
"prompt_number": 5
}
],
"metadata": {}
}
]
}
|
