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"cells": [
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"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 16: Cosmology"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 16.1, page no. 15"
]
},
{
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"input": [
"\n",
"#Variable declaration\n",
"\n",
"c = 3.0 * 10 ** 5 #speed of light (km/s)\n",
"H0 = 20 * 10**-6 #(km/s/lightyear)\n",
"\n",
"#Calculation\n",
"\n",
"Rmax = c/(4*H0)\n",
"\n",
"#Result\n",
"\n",
"print \"The maximum distance at which the Hubble's law applies without relativistic correction is\",round(Rmax/10**9),\"X 10^9 lightyears.\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The maximum distance at which the Hubble's law applies without relativistic correction is 4.0 X 10^9 lightyears.\n"
]
}
],
"prompt_number": 2
}
],
"metadata": {}
}
]
}
|
