{
"cells": [
 {
		   "cell_type": "markdown",
	   "metadata": {},
	   "source": [
       "# Chapter 10: Physical Optics"
	   ]
	},
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 10.1: plancks_theory.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//input\n",
"h=6.6*10^-34 //plancks constant\n",
"c=3*10^8 //velocity of light\n",
"e1=12.34//excited state\n",
"e2=14.19//ground state\n",
"//calculation\n",
"l=(h*c)/((e2-e1)*1.6*10^-19)//conservation of energy and plancks theory\n",
"//output\n",
"printf('the wavelength is %3.3e m',l)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 10.2: wavelength_and_prism_angle.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//input\n",
"la=0.535*10^-6//wavelength\n",
"nb=1.51//refractive index\n",
"dmin=34 //minimum deviation\n",
"//calculation\n",
"l=la/nb//wavelength of light\n",
"x=(nb-cosd(dmin/2))/sind(dmin/2)//refractive index of prism\n",
"y=acotd(x)\n",
"z=y*2\n",
"//output\n",
"printf('the wavelength of light is %3.3e m',l)\n",
"printf('\nthe angle of prism is %3.0d deg',z)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 10.3: thin_film_interference.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//input\n",
"n=7//order of fringe\n",
"l=0.63*10^-6 //wavelength\n",
"x=24.8*10^-3 //seperation of bands\n",
"d=1.5\n",
"//calculation\n",
"a=n*d*l/x//slit seperation\n",
"//output\n",
"printf('the slit seperation is %3.3e m',a)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 10.4: fringe_width_determination.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//input\n",
"n=6//order of fringe\n",
"l=0.63*10^-6 //wavelength\n",
"x=24.8*10^-3 //seperation of bands\n",
"d=1.5\n",
"a=2.7*10^-4\n",
"//calculation\n",
"x=d*(6+1/2)*l/a//distance between centre and sixth fringe\n",
"w=l*1.6/a//fringe width\n",
"//output\n",
"printf('the distance between centre and sixth fringe is %3.3e m',x)\n",
"printf('\nthe fringe width is %3.3e m',w)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 10.5: increasing_thickness_effect.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//input\n",
"a=4//widge dimension\n",
"b=64//edge of tissue\n",
"c=33//bright fringes\n",
"l=0.53*10^-6 //wavelength\n",
"//calculation\n",
"m=b*c/a//number of bright fringes\n",
"t=m*l/2//thickness\n",
"//output\n",
"printf('the thickness is %3.3e m and hence number of fringes also increases',t)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 10.6: wavelength_and_angular_displacement.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//input\n",
"n1=6//6th order image\n",
"n2=5//5th order image\n",
"n=3000//lines per cm\n",
"//calculation\n",
"l=n2*0.11*10^-6/(6-5)//applying dsinx=nl\n",
"l1=l+(0.11*10^-6)//applying dsinx=nl\n",
"d=1/(n*100)//applying dsinx=nl ,grating space calculation\n",
"x=n1*l/d \n",
"y=asind(x)\n",
"//output\n",
"printf('the wavenlength of first wave is %3.3e m',l)\n",
"printf('\nthe wavenlength of second wave is %3.3e m',l1)\n",
"printf('\n the angular displacement is %3.3f deg',y)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 10.7: wavelength_and_diffraction_angle.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//input\n",
"n2=1.36//refractive index\n",
"N=5000*100 //number of lines per m\n",
"t=23 //angle of diffraction\n",
"//calculation\n",
"l=sind(t)/(n2*N)//applying dsinx=nl,calculating wavelength \n",
"x=N*l//angle of diffraction\n",
"y=asind(x)\n",
"//output\n",
"printf('the wavelength of light in methanol is %3.3e m',l)\n",
"printf('\n the angle of diffraction is %3.3f degrees',y)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 10.8: telescope_angular_magnification.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"clc\n",
"clear\n",
"//input\n",
"fo=1.5//objective's focal length\n",
"fc=0.04//eyepiece focal length\n",
"//calculation\n",
"m=fo/fc//angular magnification\n",
"v=fc*(fc+fo)/fo//distance of eye ring from eyepiece\n",
"//output\n",
"printf('the angular magnification is %3.2f',m)\n",
"printf('\n the distance of eye ring from eyepiece is %3.3f m',v)"
   ]
   }
],
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		   "name": "scilab"
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		  "language_info": {
		   "file_extension": ".sce",
		   "help_links": [
			{
			 "text": "MetaKernel Magics",
			 "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
			}
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