//Chapter-1,Example1_3_2,pg 1-22

wavelength=5893*10^-8                                                  //wavelength of light 

B=0.1                                                        //fringe width

u=1.52                                                           //refractive index of glass wedge

a=(wavelength/(2*u*B))*3600*(180/%pi)                                   //as fringe spacing is    'B = wavelength/(2*a*u)'

printf("\nThe angle of wedge is  a =%.2f seconds \n",a)