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{
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"cells": [
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"cell_type": "heading",
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"metadata": {},
"source": [
"Chapter 2:Energy levels and energy bands"
]
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{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Sec.2-3,Pg_no:40"
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"input": [
"#To calculate the number of photons per second\n",
"\n",
"#variable declaration\n",
"E=(12400.0/2537.0) #Energy per photon\n",
"p=0.05/(1.60*(10**(-19))) #power radiated\n",
"\n",
"#Calculation\n",
"n=p/E #number of photons per second\n",
"\n",
"#Result\n",
"print \"The number of photons per second is\",round(n,2),\"photons/sec\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The number of photons per second is 6.39364919355e+16 photons/sec\n"
]
}
],
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"language": "python",
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