clc
//
//
//

//Variable declaration
lambdaa=5893*10**-10  //Wavelength
l=0.2945*10**-3       //Distance by which mirror is displaced


//Calculations
dellambdaa=(lambdaa**2)*10**10/(2*l)

//Result
printf("\n The Difference between two wavelengths is  %0.1f Angstrom",dellambdaa)